Casino glossary - 185 terms explained

A

AGCO (Alcohol and Gaming Commission of Ontario): Ontario's gambling regulator. Issues licenses and enforces compliance for the iGaming Ontario market - the only fully regulated open online casino market in Canada.
All-in: Wagering all of your remaining chips on a single poker hand.
American roulette: The double-zero roulette variant (0 and 00), which raises the house edge to 5.26% - meaningfully worse for players than single-zero European roulette.
AML (Anti-Money Laundering): The framework of rules and operator obligations that prevent gambling sites from being used to launder illegitimate funds. Drives the KYC verification you go through at registration plus ongoing transaction monitoring.
Ante: A small forced bet every player posts before a hand to seed the pot. Used in stud games and many casino poker variants.
Autoplay: A feature in online slots that runs a set number of spins automatically without manual input. Banned at German GGL-licensed operators under the Glücksspielstaatsvertrag 2021 player-protection framework; widely available in most other regulated markets.

B

Baccarat: A comparing card game where the player bets on whether the Player hand, Banker hand, or a Tie wins. The Banker bet carries the lowest house edge of any standard casino game (about 1.06%).
Bad beat: Losing a hand you were a strong statistical favorite to win. Some rooms pay a "bad beat jackpot" for exceptionally unlucky losses.
Banker bet: The baccarat wager on the Banker hand, which carries the lowest house edge (about 1.06% after the standard 5% commission) - statistically the best of the three main baccarat bets.
Bankroll: The total amount of money you have allocated to gambling activity. Bankroll management is the discipline of sizing bets relative to bankroll so a normal losing streak doesn't wipe you out.
Basic strategy: The mathematically optimal play for every blackjack hand given the dealer's upcard. Following basic strategy doesn't guarantee winning, but it minimizes the house edge to as low as the game rules allow.
Bingo: A game of chance where players mark numbers on cards as they are drawn, winning by completing a required pattern. Online bingo runs 75-ball and 90-ball formats with automatic daubing.
Blackjack: A comparing card game where the player aims to beat the dealer's hand without going over 21. With basic strategy correctly applied, the house edge is among the lowest in the casino (about 0.5%).
Blind: A forced bet posted by one or two players to the dealer's left before cards are dealt, used in Hold'em-style games in place of an ante.
Bluff: Betting or raising with a weak hand to pressure opponents into folding stronger holdings.
Bonus abuse: Patterns of play designed to extract a casino bonus's monetary value while bypassing the playthrough intent (creating multiple accounts, betting maximum stake then withdrawing, using low-volatility games to grind playthrough). Operators detect and void bonuses where abuse signals appear.
Bonus buy: A slot feature that lets players pay a multiple of their base stake (typically 50-100x) to instantly trigger the bonus round. Banned in some regulated markets including the UK.
Bonus code: A short alphanumeric code entered at registration or deposit to unlock a specific bonus offer. Most modern operators autoclaim bonuses via affiliate-tracked URLs rather than requiring manual codes.
Bonus round: A special slot feature - free spins, pick-a-prize, wheel, and the like - triggered by scatter or bonus symbols. Usually where most of a slot's payout potential lives.
Boxcars: A roll of two 6s (total 12) in craps.
Bust: Going over a total of 21 in blackjack, an automatic loss no matter what the dealer holds.
Buy-in: The amount of money required to enter a poker cash game or tournament.

C

Cage: The secure cashier area of a casino where chips are exchanged for cash and large transactions are handled.
Card counting: Tracking the ratio of high to low cards left in the shoe to gain a small edge in blackjack. Legal but grounds for being barred by a casino; largely useless online, where the shoe reshuffles every hand.
Caribbean Stud: A casino poker game played one-on-one against the dealer rather than other players, usually with an optional progressive side bet.
Cascading reels: A slot mechanic where winning symbols are removed and replaced by new ones dropping in, allowing several wins from one spin. Also called tumbling reels or avalanche.
Cashback: A bonus type that returns a percentage of net losses over a defined period (daily / weekly / monthly). Cashback is typically less aggressively gated than welcome bonuses (lower wagering, no game restrictions) because it's framed as loss mitigation.
Cashout: Withdrawing winnings from your casino balance back to your bank account, e-wallet, or other payment method. Processing time varies dramatically by method and operator; ACH and bank transfer are typically slower than e-wallets or Interac.
Chemin de Fer: A baccarat variant where players take turns acting as the bank and make the drawing decisions, rather than following fixed rules.
Column bet: A roulette outside bet covering one of the three vertical columns of 12 numbers, paying 2:1.
Come-out roll: The first roll of a new craps round, which either resolves pass / don't-pass bets immediately or establishes the point.
Community cards: Shared face-up cards (the flop, turn, and river in Hold'em) that every player combines with their own to make a hand.
Comp points: Loyalty rewards earned through play that can be redeemed for bonus credit, cash, or perks. Most modern operators run tiered VIP / loyalty programs rather than the older "comps" model.
Cooling-off period: A short, reversible self-exclusion (typically 24 hours to 7 days) intended as a circuit-breaker rather than a binding commitment. Most regulated frameworks require operators to offer cooling-off alongside the longer-term self-exclusion register.
Coverall: A bingo pattern that requires marking every number on the card. Also called blackout; usually the largest prize of a session.
Craps: A dice game where players bet on the outcome of a two-dice roll or a sequence of rolls. The pass line is the core bet, and craps offers some of the best odds in the casino when played correctly.
Crash games: A casino-game format where a multiplier curve rises continuously and the player cashes out before the curve "crashes". Aviator (Spribe) is the genre reference. Sits structurally between slots and skill-elective games because the cash-out decision is on the player.
Croupier: The casino employee who runs a table game - dealing cards, spinning the wheel, and paying out bets. "Dealer" is the more common American term.
CRUKS (Centraal Register Uitsluiting Kansspelen): The Dutch national self-exclusion register operated by Kansspelautoriteit. One registration excludes the player from every KSA-licensed online operator plus Holland Casino physical premises for the chosen period (six months minimum).

D

D'Alembert: A gentler negative-progression betting system that raises the stake one unit after a loss and lowers it one unit after a win. Like all such systems, it leaves the underlying house edge untouched.
Demo mode: A "play for fun" mode that lets you try a casino game without depositing real money. Demo mode uses the same RNG as the real-money version so volatility and bonus-round behavior are identical.
Deposit bonus: A bonus that matches a percentage of your deposit with bonus funds (for example, 100% up to $200). The headline of most welcome offers - read the wagering and cashout terms before claiming.
Deposit limit: A cap on how much you can deposit at an operator within a daily, weekly, or monthly window. In most regulated markets the limit is set at registration; some markets (Netherlands, Germany) impose mandatory defaults that the player can only adjust upward through a verification process.
DGE (Division of Gaming Enforcement): New Jersey's gambling regulator, part of the Office of the Attorney General. Administers iGaming licensing under the Atlantic City partnership model, supervises AML compliance, and runs the state self-exclusion register.
DGOJ (Dirección General de Ordenación del Juego): Spain's federal gambling regulator under Ministerio de Consumo. Issues operator licenses, administers the RGIAJ self-exclusion register, and enforces the Real Decreto 958/2020 advertising framework.
Don't pass: The craps bet against the shooter. Wins on a come-out 2 or 3, loses on 7 or 11, and after a point is set wins if a 7 rolls before the point.
Double down: A blackjack option to double your original bet in exchange for exactly one more card. Best used on strong starting totals (typically 9-11) where a single card is likely to win the hand.
Dozen bet: A roulette outside bet on the first, second, or third dozen (1-12, 13-24, or 25-36), paying 2:1.

E

E-wallet: A digital intermediary (PayPal, Skrill, Neteller, MuchBetter, etc.) that holds funds and processes payments between your bank and the casino. Typically faster than card or ACH withdrawals at the cost of an additional account layer.
eCOGRA: An independent testing agency that audits casino RNGs, payout percentages, and fair-play practices, and mediates player disputes. An eCOGRA seal is a common third-party trust signal.
En Prison: A French-roulette rule that, on an even-money bet when the ball lands on zero, locks ("imprisons") the bet for the next spin rather than losing it outright. Roughly halves the even-money house edge.
Encryption: The scrambling of data (usually via TLS / SSL) so payment and personal details cannot be read in transit between you and the casino. Standard at every legitimate operator.
European roulette: The single-zero roulette variant. House edge is 2.7% on standard bets - meaningfully better than American roulette (5.26%) and the French variant adds additional player-favorable rules (en prison / la partage) that reduce the edge further on even-money bets.
Even money: Taking a guaranteed 1:1 payout on your blackjack when the dealer shows an ace, instead of risking a push if the dealer also has blackjack. Mathematically the same as insuring your blackjack.
Exclusive bonus: A bonus offered only to players arriving from a specific affiliate partner. The displayability framework on CasinoAdvisor specifically excludes exclusive bonuses from public listings to keep ranking integrity neutral.
Eye in the sky: A casino's overhead surveillance system of cameras that monitors tables and floor for cheating and disputes.

F

Flat betting: Wagering the same amount on every bet regardless of prior results. The most bankroll-stable approach, and the baseline against which betting systems are measured.
Flush: Five cards of the same suit, not in sequence.
Fold: Discarding your hand and giving up any claim to the pot.
Four of a kind: Four cards of the same rank. Also called "quads."
Free spins: Spins on a slot game awarded without the player risking their own stake. Free spins are typically attached to a specific slot title and carry their own wagering and maximum-cashout terms - check before activating because terms vary widely.
Freeroll: A tournament with no entry fee that still awards real prizes - a common acquisition promotion.
Full house: A poker hand of three of a kind plus a pair.

G

Gamble feature: An optional slot mini-game offered after a win, letting you risk it on a double-or-nothing guess such as a card color or suit. Banned in some regulated markets.
Gambler's fallacy: The incorrect belief that past random outcomes affect future ones - that "red is due" after five black spins, or that a slot is "hot" after a recent win. Each RNG outcome is independent; prior results carry zero predictive value.
GamCare: UK problem-gambling support charity. Operates the National Gambling Helpline (0808 8020 133) and coordinates clinical treatment programs across the UK alongside the broader GambleAware funding framework.
Game weighting: How much each casino game category contributes to bonus playthrough. Slots typically count 100%; table games and live dealer often 10-20%; some games may contribute 0%. Always check the weighting table before targeting a specific game to clear a bonus.
GAMSTOP: The UK national self-exclusion register. One registration excludes the player from every UKGC-licensed online operator for the chosen period (six months to five years or indefinite). Binding once registered.
Geolocation: The IP + device-level location verification that regulated operators run on every wager. Required in every US iGaming state - players who cross state lines lose access to their accounts for the duration. VPN circumvention is operationally detected.
GGL (Gemeinsame Glücksspielbehörde der Länder): Germany's federal gambling regulator under the Glücksspielstaatsvertrag 2021. Oversees the strictest player-protection regime of any major regulated market: €1 max slot stake, 5-second minimum spin time, €1,000/month cross-operator deposit cap (LUGAS).
GGR (Gross Gaming Revenue): Total wagers received minus winnings paid out, before any operator costs. Most jurisdictions tax operators on GGR (regulator-favorable, easier to verify); a few (Portugal sports betting, Germany on slots) tax on turnover instead, which is structurally heavier.
Gold Coins: The entertainment-only virtual currency at sweepstakes casinos. Used for casual play with no cash-redemption path. Players purchase Gold Coin packages and receive bonus Sweeps Coins as the redeemable component of the offer.

H

Hard hand: A blackjack hand with no ace, or one where the ace must count as 1 to avoid busting. Hard hands carry bust risk that soft hands of the same total do not.
High roller: A player who wagers substantially more than the average customer. Many operators run dedicated high-roller programs with raised deposit and withdrawal limits, personal account managers, and bespoke bonus terms not visible in public offers.
Hit: Requesting another card in blackjack (and similar card games) to improve your total. You can keep hitting until you choose to stand or you bust.
Hit frequency: The percentage of slot spins that produce any winning combination. A 30% hit frequency means roughly three in ten spins return at least the stake; lower hit frequencies typically pair with higher single-spin payouts (higher variance).
Hold percentage: The portion of total wagers an operator retains as gross revenue, calculated as 1 minus RTP averaged across all games. A hold of 4% means the operator keeps about 4 cents of every dollar wagered over enough volume; it's the operator-side metric corresponding to player-side house edge.
Hole card: A face-down card - the dealer's hidden card in blackjack, or the concealed cards in stud poker. Its value is unknown until players have acted.
House edge: The casino's built-in mathematical advantage on a given game or bet, expressed as the percentage of each wager the operator keeps over enough volume. Lower house edge = better long-run player position. Blackjack with basic strategy: ~0.5%; European roulette: 2.7%; American roulette: 5.26%; keno: 25-30%.

I

iGO (iGaming Ontario): The Ontario subsidiary corporation that contracts commercially with online operators under AGCO's regulatory framework. Players see "iGO" branding in operator footers as the consumer-facing mark of the regulated Ontario open market.
Inside bet: A roulette bet on specific numbers or small groups inside the number grid (straight-up, split, street, corner). Higher payouts and lower odds than outside bets.
Instant win: A game format that resolves immediately with no draw or spin sequence - scratch cards, crash-style pick games, and similar.
Insurance: A blackjack side bet offered when the dealer shows an ace, paying 2:1 if the dealer has blackjack. Statistically a losing bet for non-counters over time, so basic strategy declines it.
Interac: The Canadian bank-to-bank instant payment network. Interac e-Transfer and Interac Online are the dominant deposit and withdrawal methods at Canadian-facing casinos - typically fee-free, real-time deposits, with withdrawals settling in 1-3 business days.

J

Jackpot: A fixed or progressive prize pool that can be won by triggering a specific in-game condition. Fixed jackpots pay a set amount; progressive jackpots accumulate from every wager across operators in the network until won. Banned at German GGL-licensed operators.
Junket: An organized trip that brings high-value players to a casino, often with travel and lodging covered in exchange for agreed levels of play.

K

Keno: A lottery-style number-draw game played at casino pace. House edge is structurally one of the highest in the casino (typically 25-30%), and no pick strategy improves long-run expected value.
KGC (Kahnawake Gaming Commission): A First Nations-administered gambling regulator based in the Kahnawake Mohawk territory in Quebec. One of the oldest online gambling regulators (operational since 1996); reasonable enforcement standards and widely used by operators serving North American players from outside provincial frameworks.
Kicker: A side card used to break ties between hands of the same rank - with two players each holding a pair of kings, the higher kicker wins.
KSA (Kansspelautoriteit): The Dutch gambling regulator. Administers operator licensing under the KOA-act since October 2021 and enforces the Zorgplicht (duty of care) obligation that requires operators to actively monitor and intervene on signs of problem gambling.
KYC (Know Your Customer): The identity-verification process operators run at registration plus periodic re-checks. Typically requires a government-issued ID document, proof of address, and (for substantial withdrawals) proof of source of funds. Drives the AML framework operators have to comply with.

L

La Partage: A French-roulette rule returning half of a losing even-money bet when the ball lands on zero. Like en prison, it cuts the even-money house edge to about 1.35%.
Land-based casino: A physical casino with on-site gambling tables and slot machines. Most US iGaming frameworks require online operators to partner with a land-based property, which produces structurally different product economics than purely online licensing.
Let It Ride: A casino poker game where you build a hand from three cards plus two community cards, and can pull back part of your bet if the hand looks weak.
License: The regulatory authorization an operator holds from a specific gambling regulator. Verifying a casino's license (number + issuing authority, both displayed in the footer) against the regulator's public register is the foundational consumer-protection check.
Live dealer: Real-time video-streamed casino games hosted by human dealers at studio tables. Most live dealer is operated by Evolution, Pragmatic Play Live, or smaller studio operators (Vivo, Ezugi, Authentic). Banned at German GGL-licensed online operators; permitted at most other regulated frameworks.
Loss limit: A cap on how much you can lose at an operator within a daily, weekly, or monthly window. Distinct from deposit limit (which caps inflow regardless of session result) - loss limit halts play once net losses hit the threshold even if you still have deposit headroom.

M

Martingale: A betting system that doubles the stake after every loss to recover prior losses plus a small profit. It fails in practice because table limits and finite bankrolls collide with losing streaks; it does not change the house edge.
Match bonus: A bonus that matches your deposit at a set percentage. Effectively a synonym for a deposit bonus.
Maximum cashout: A cap on how much you can withdraw from a bonus, regardless of how much you win with bonus funds. Common at no-deposit bonuses (max cashout typically $50-200) and free spins (max cashout typically $50-100). Real-money winnings have no max cashout.
Megaways: A slot mechanic licensed by Big Time Gaming where each reel shows a variable number of symbols per spin, producing up to 117,649 ways to win. Found in many third-party slots (Pragmatic, Blueprint, Reel Kingdom). Banned at German GGL-licensed operators.
MGA (Malta Gaming Authority): One of the most established European gambling regulators. Licenses operators that serve markets without local regulated frameworks (NZ, IE, AT, others). Strong enforcement standards but the MGA framework is generally less restrictive than UKGC or German GGL.
MGCB (Michigan Gaming Control Board): Michigan's iGaming regulator. Operates the only US dual-track partnership model where licensed operators partner with either Detroit commercial casinos or one of 12 federally-recognized Michigan tribes under tribal-state compacts.
MitID: The Danish national digital identity system. Mandatory at every Danish-licensed online operator for registration and recurring re-verification - the most robust player-identity layer in any regulated gambling market.
Multiplier: A feature that multiplies a win, or a whole round's payout, by a set factor (2x, 3x, and up). Common inside free-spin rounds and as a wild-symbol enhancement.

N

Natural: A two-card 21 in blackjack (an ace with a ten-value card), or a two-card 8 or 9 in baccarat. Usually wins automatically or pays a premium.
NCPG (National Council on Problem Gambling): The US federal problem-gambling support organization. Operates the 1-800-522-4700 national helpline that routes callers to state-specific resources. The federally-consistent baseline across the state-by-state iGaming patchwork.
No-deposit bonus: A bonus credited at registration without requiring a real-money deposit. Typically modest in absolute value ($10-25) with low maximum cashout caps and strict wagering, but the lowest-friction way to sample a new operator.
Non-sticky bonus: A bonus structure where bonus funds and real-money deposit are tracked separately. You play with deposit funds first; the bonus only kicks in after the deposit is spent. Lets you withdraw real-money winnings without triggering bonus playthrough.

O

Odds: The mathematical likelihood of an event expressed as a ratio (5:1 against), fraction (1/6), or decimal (6.00). True odds reflect the actual probability; the casino's payout odds are slightly worse, and the gap is where the house edge lives.
Odds bet: A supplementary craps bet placed behind the pass / don't-pass line once a point is set, paid at true odds with zero house edge. Taking maximum odds is the lowest-house-edge play in the casino.
Outside bet: A roulette bet on large groups outside the number grid - red/black, odd/even, high/low, columns, dozens. Near-even odds with correspondingly small payouts.

P

Pai Gow Poker: A casino poker game where you split seven cards into a five-card and a two-card hand, both of which must beat the dealer's to win. Slow-paced with frequent pushes.
Pair: Two cards of the same rank - the lowest-ranking made hand in poker and the minimum paying hand in Jacks or Better video poker.
Pass line: The primary craps bet: won on a come-out roll of 7 or 11, lost on 2, 3, or 12. Any other number becomes the "point," which must repeat before a 7 for the bet to win.
Payline: A predetermined line across the reels where matching symbols produce a winning combination. Modern slots increasingly use "ways to win" (any-position symbol matching on adjacent reels) rather than fixed paylines.
Paytable: The reference table on a slot or video poker game that shows the payouts for each winning combination at the current stake. Always check the paytable before playing - the same slot title can have different paytables across operators in some markets.
Pending period: A reversal window between a withdrawal request and final processing during which the player can cancel the withdrawal and return the funds to playable balance. Older operators used pending periods of 24-72 hours; modern best-practice operators have largely eliminated reverse-withdrawal pending entirely.
PGCB (Pennsylvania Gaming Control Board): Pennsylvania's iGaming regulator. Administers the highest US iGaming tax rate (54% on online slot GGR), which has shaped tighter operator bonus economics than at lower-tax states like NJ or WV.
Player bet: The baccarat wager on the Player hand, paying even money with a house edge of roughly 1.24%.
Playthrough requirement: Another name for the wagering requirement - how much you must bet before bonus winnings can be withdrawn.
Point: The number (4, 5, 6, 8, 9, or 10) set on the come-out roll that the shooter must repeat before rolling a 7 for pass-line bets to win.
Pokies: Australian and New Zealand slang for slot machines ("poker machines").
Pot: The total chips wagered in a poker hand, awarded to the winner (or split among tied hands).
Problem gambling: A pattern of gambling behavior that produces measurable harm to the player or those around them - financial, relational, occupational, or psychological. Distinct from "gambling addiction" as a clinical diagnosis; covers a wider behavioral spectrum.
Progressive jackpot: A jackpot that grows with every wager placed across the connected operator network until won. The largest progressive jackpot networks (Mega Moolah, Hall of Gods, others) span dozens of operators and can reach eight-figure prize pools.
Progressive slot: A slot whose jackpot grows with every bet placed across a network of linked games until someone wins it.
Provably fair: A cryptographic method - common at crypto casinos - that lets players independently verify each game outcome was not manipulated after the fact.
Pull tab: A cheap instant-win ticket where peeling paper tabs reveals symbols. The digital version is common at social and sweepstakes sites.
Punto Banco: The most common baccarat variant, where drawing follows fixed rules and players only choose Player (Punto), Banker (Banco), or Tie.
Push: A tie between player and dealer where your original bet is returned with no win or loss.

Q

Quick Pick: Letting the system randomly choose your lottery, keno, or bingo numbers instead of picking them yourself.

R

Rake: The small percentage of each pot, or a tournament fee, that the operator takes as its cut for hosting the game.
Reels: The vertical strips of symbols that spin on a slot. Most online slots use 3-6 reels, and the symbol combinations across active lines determine wins.
Reload bonus: A bonus offered to existing players on subsequent deposits after the initial welcome bonus. Typically smaller (25-50% match) and with tighter wagering than the welcome - retention-focused rather than acquisition-focused.
Responsible gambling: The framework of player-protection tools, operator obligations, and behavioral choices designed to keep gambling within healthy limits. Includes deposit / time / loss limits, self-exclusion, reality checks, and operator-side monitoring.
Reverse withdrawal: Cancelling a pending withdrawal to return the funds to playable balance. A common pattern in problem-gambling escalation; modern operators in regulated markets are increasingly required to disable or restrict this feature.
RGIAJ (Registro General de Interdicciones de Acceso al Juego): Spain's national self-exclusion register operated by DGOJ. One Cl@ve or DNIe-verified registration excludes the player from every DGOJ-licensed operator across all product categories for the chosen period (one month minimum).
RNG (Random Number Generator): The cryptographic system that generates each slot spin, card draw, or roulette outcome. Certified RNGs at regulated operators are independently audited by entities like eCogra or GLI to verify outcomes are genuinely random and match advertised RTP.
ROFUS (Register Over Frivilligt Udelukkede Spillere): Denmark's national self-exclusion register operated by Spillemyndigheden. One MitID-verified registration excludes the player from every Danish-licensed gambling operator across every product category for the chosen period.
Rollover: A common synonym for a bonus's wagering requirement / playthrough.
Royal flush: The highest poker hand: a ten-to-ace straight all in one suit. The top jackpot on most video poker paytables.
RTP (Return to Player): The theoretical percentage of total wagers a slot or game returns to players over enough volume. RTP of 96% means the game keeps about 4 cents of every dollar wagered as house take over the long run; individual sessions deviate substantially from RTP. The inverse of house edge.
RUA (Registro Unico degli Autoesclusi): Italy's national self-exclusion register operated by ADM, operational since 2023. One SPID-verified registration excludes the player from every ADM-concessioned operator across every product category for the chosen period (six months minimum).

S

Scatter symbol: A slot symbol that triggers a bonus feature (typically free spins) when enough of them appear anywhere on the reels - not just on a payline. Scatters don't need to land in any specific arrangement to count.
Self-exclusion: A binding voluntary block from accessing your account at one or more operators for a chosen period. Most regulated frameworks operate a federal cross-operator register (GAMSTOP, ROFUS, CRUKS, RUA, RGIAJ, Spelpaus) where a single registration covers every licensed operator.
Shoe: The dealer's card-dispensing box holding multiple decks. More decks and continuous shuffling reduce a card counter's edge.
Showdown: The end of the final betting round where remaining players reveal their hands to decide the winner.
Sic Bo: An ancient Chinese three-dice game where players bet on the outcome of a roll. Bet types range from low-edge (big / small) to high-payout, high-edge specific-triple wagers.
Skin (operator skin): A consumer-facing operator brand running under another operator's master license in a partnership framework. Common in US iGaming markets where every online operator must partner with a land-based casino - the online brands are skins under the land-based partner's license.
Slot machine: A casino game in which the player wagers on the outcome of spinning reels. Modern online slots use RNG outcomes rather than physical reels and typically pay out 92-98% of wagers over the long run (RTP).
Snake eyes: A roll of two 1s (total 2) in craps.
Social casino: A casino-game product where players use virtual currency without cash redemption. Sits outside gambling regulation in most jurisdictions because the play surface has no real-money outcome. Distinct from sweepstakes casinos where prizes are redeemable.
Soft hand: A blackjack hand holding an ace counted as 11, so it cannot bust on the next card (Ace-6 is a "soft 17"). Its counterpart is a hard hand.
Spelpaus (Spelpaus.se): Sweden's national self-exclusion register operated by Spelinspektionen. One BankID-verified registration excludes the player from every SGA-licensed operator for the chosen period; binding once registered.
SPID (Sistema Pubblico di Identità Digitale): Italy's national digital identity system. Used by ADM for RUA self-exclusion registration and by some ADM-concessioned operators as an optional faster registration alternative to document-based KYC.
Split: A blackjack option to separate a starting pair into two independent hands, each getting a second card and matching your original bet. Whether you can re-split or double after splitting depends on house rules.
Stake: The amount wagered on a single bet, spin, or hand. Maximum stake limits are a common player-protection tool: German GGL operators cap online slot stake at €1; UKGC operators apply £2 maximum stake on FOBT-equivalent products.
Stand: Declining any further cards in blackjack and keeping your current total to play against the dealer.
Sticky bonus: A bonus structure where bonus funds and deposit are commingled, and the player can only withdraw after clearing the full wagering requirement. Maximum cashout caps and game weighting also apply. The older bonus pattern; non-sticky bonuses are now more common.
Straight: Five cards in consecutive rank order of mixed suits.
Straight flush: Five consecutive cards all of the same suit - the second-highest poker hand.
Surrender: A blackjack option to forfeit half your bet and end the hand before drawing, used on very weak positions against a strong dealer upcard. Not offered at every table.
Sweeps Coins: The redeemable promotional virtual currency at sweepstakes casinos. Won through play or received as free entries; can be redeemed for cash prizes once accumulated past the redemption threshold. Distinct from Gold Coins which have no cash value.
Sweepstakes casino: A casino product that operates under federal sweepstakes-promotion law rather than state gambling licensing. Players use Gold Coins (no cash value) for entertainment-only play and receive Sweeps Coins as free promotional entries that can be redeemed for cash prizes. Widely available across US states that have not regulated online casino.
Symbol: An icon on a slot reel. Standard symbols pay when matched along a line; special symbols (wilds, scatters, bonus) trigger extra features.

T

Table game: Casino games played on a physical or virtual table with cards, dice, or a wheel - blackjack, baccarat, roulette, craps, poker variants. Distinct from slot games. Generally lower house edge than slots when played with optimal strategy.
Texas Hold'em: The most popular poker variant: each player gets two hole cards and combines them with five shared community cards to make the best hand.
Three of a kind: Three cards of the same rank. Also called "trips" or a "set."
Tie bet: A baccarat wager that Player and Banker finish equal. It pays 8:1 or 9:1 but carries a steep house edge (14%+), so it is best avoided.
Tilt: Playing emotionally and sub-optimally after a loss or bad beat, usually compounding the damage.
Toke: A tip given to a dealer, either in chips or by placing a bet on their behalf.
Tournament: A time-limited competition among players for a shared prize pool, ranked by total wins or score within the tournament window. Common at slot operators (scheduled slot tournaments), poker rooms (multi-table tournaments / sit-and-go), and across some live dealer products.
Two pair: A poker hand containing two separate pairs.

U

UKGC (UK Gambling Commission): The UK's federal gambling regulator. One of the most operationally rigorous regulated frameworks globally - GAMSTOP self-exclusion, mandatory deposit limits, strict affordability checks, and active enforcement against operators that breach the license conditions.

V

Variance: A measure of the typical deviation between actual session outcomes and the theoretical RTP-based expectation. High-variance games produce large but infrequent wins; low-variance games produce small frequent wins with similar long-run RTP.
Video poker: A category of casino games structured around 5-card poker hand-ranking against a fixed paytable. With optimal play on player-favorable variants (full-pay Jacks or Better, full-pay Deuces Wild), video poker is one of the lowest-house-edge games in the casino.
VIP program: A tiered loyalty framework that rewards regular play with cashback, deposit-bonus multipliers, dedicated account management, raised limits, and other perks. Most modern operators position the VIP program as retention infrastructure rather than acquisition.
Volatility: Equivalent to variance - the typical swing magnitude between session outcomes and expected return. Slot publishers usually rate volatility on a 1-5 or low/medium/high scale; volatility doesn't affect long-run RTP but materially affects bankroll requirements.

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Wagering requirement (WR): The multiplier of bonus funds (or bonus + deposit) you must wager before being allowed to withdraw bonus-derived winnings. A 30x wagering requirement on a $100 bonus means $3,000 in total wagers before withdrawal is permitted. Lower WR = better player position.
Welcome bonus: A bonus offered to new players on first deposit (or sometimes registration). The most heavily marketed bonus type and typically the most generous in absolute terms; balance the headline value against wagering requirements and maximum cashout before committing.
Whale: A player who wagers extremely large amounts - the top tier of high roller, courted with bespoke perks and limits.
Wild symbol: A slot symbol that substitutes for other symbols to complete winning combinations. Variants include expanding wilds (filling a whole reel), sticky wilds (staying in place across multiple spins), and walking wilds (moving across the reels each spin).
Withdrawal: The process of cashing out winnings from your casino balance to a bank account, e-wallet, or other payment method. Processing time varies dramatically by operator, method, and verification status - confirm the operator's withdrawal timeline against published expectations before depositing significant funds.

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Zorgplicht (duty of care): The Dutch KOA-act obligation requiring every KSA-licensed operator to monitor player behavior in real time and intervene at signs of harm. Unique among regulated European markets - no other framework binds operators to active intervention at this level.

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