Casino Dictionary: Your Guide to Understanding Gambling Terminology

Ashok Lagari

Expert:Ashok LagariWriter, Editor & Fact Reviewer

Experience:Betting, Casino Content Writer, Editor & Gambling Expert

Table of Content

Entering the world of casinos can feel like stepping into a labyrinth of unfamiliar terminology. From "ante" to "wagering requirements," understanding the language of gambling is essential for both beginners and seasoned players alike. This comprehensive dictionary aims to unravel the mysteries of casino jargon, providing clear definitions and explanations for common terms and phrases.


  • 24/7: Refers to services available round-the-clock, often used to describe customer support.
  • 3D Slots: Slot games with three-dimensional graphics and animations.


  • Ante: The initial bet required to participate in certain card games, like poker.
  • Action: The total amount of money wagered by players during a specific period of time.
  • All-In: A bet where a player risks all their remaining chips in a single wager.
  • Aces Up: A hand in poker containing two pairs, one of which is a pair of Aces.
  • Affiliate: A person or company that earns commission for referring players to an online casino.


  • Bankroll: The total amount of money a player has available for gambling.
  • Bankroll management: The process of controlling and limiting the amount of money allocated for gambling to ensure sustainable and responsible play.
  • Bonus: Additional funds or rewards given to players by the casino, often as an incentive to play.
  • Bet: The amount of money wagered on a particular outcome in a casino game.
  • Blackjack: A popular card game where the goal is to achieve a hand value of 21 or as close to it as possible without exceeding it.


  • Chips: Tokens used in casinos to represent money and place bets on various games.
  • Croupier: The casino employee responsible for overseeing table games and ensuring fair play.
  • Cashback: Refund given to players on their losses over a specific period.
  • Cash Out: The process of converting casino chips back into cash.
  • Craps: A popular dice game played in casinos, involving betting on the outcome of dice rolls.


  • Dealer: The casino employee responsible for dealing cards or operating the roulette wheel during table games.
  • Deposit: Adding funds to your online casino account to play games.
  • Double Down: In blackjack, the option for a player to double their initial bet after seeing their first two cards.


  • Edge: The statistical advantage that the casino holds over players in a particular game.
  • Expanding Wild: Wild symbol in a slot game that expands to cover an entire reel.
  • Even Money: A bet with a payout equal to the amount wagered, typically found in games like blackjack.


  • Free Spins: Bonus rounds awarded to players on slot machines, allowing them to spin the reels without wagering additional money.
  • Flop: In poker, the first three community cards dealt face-up on the table.
  • Flush: Poker hand consisting of five cards of the same suit.
  • Fold: To forfeit your hand in poker and lose your bet.


  • Gambling Commission: A regulatory body tasked with overseeing casinos and ensuring compliance with gaming laws.


  • High Roller: A player who consistently wagers large sums of money.
  • Hit: In blackjack, the action of requesting an additional card from the dealer.
  • Hold Percentage: Percentage of player bets that the casino keeps as profit.
  • House Edge: The mathematical advantage that the casino has over players in a specific game, built into the game's design to ensure profitability for the casino.


  • Instant Play: Feature that allows players to access casino games directly from their web browser without downloading any software.
  • Insurance: A side bet in blackjack offered when the dealer's face-up card is an Ace, allowing players to protect their original bet against the possibility of the dealer having a natural blackjack.


  • Jackpot: The top prize in a casino game, often consisting of a substantial sum of money.
  • Jacks or Better: A popular variant of video poker where players need a hand containing at least a pair of Jacks to win.
  • Joker: Wild card in some variations of poker and certain casino games.


  • Keno: A lottery-style game where players select numbers and win prizes based on how many of their chosen numbers match those drawn by the casino.
  • Kicker: Highest-ranking card in a poker hand that is not part of any standard hand ranking.
  • KYC (Know Your Customer): Verification process used by casinos to confirm the identity of their players.


  • Layoff: In sports betting, the action of placing a bet with another bookmaker to balance or minimize risk.
  • Live Dealer: Online casino games where real dealers operate the game in real-time via video streaming.
  • Lobby: The main area of an online casino where players can access different games and features.
  • Loyalty Program: System where players earn points or rewards based on their gambling activity, often used to incentivize repeat play.
  • Low Roller: A player who typically wagers smaller amounts of money at a casino.


  • Martingale: A betting strategy where players double their wager after every loss, with the aim of recovering losses and making a profit.
  • Minimum Bet: Smallest amount of money that a player can wager on a casino game.
  • Multiplier: A feature found in some casino games that multiplies the player's winnings by a predetermined factor.


  • No Deposit Bonus: A promotional offer from a casino that rewards players with bonus funds or free spins without requiring a deposit.
  • Natural: In blackjack, a two-card hand totaling 21 points, consisting of an Ace and a 10-value card.


  • Odds: The likelihood of a particular outcome occurring in a casino game, expressed either as a fraction, decimal, or percentage.
  • Outside Bet: In roulette, a bet placed on the perimeter of the betting layout, covering large groups of numbers.


  • Pit Boss: Supervisor responsible for overseeing table games and ensuring fair play in a casino.
  • Progressive Jackpot: A continuously growing prize pool that accumulates over time until a player wins it.
  • Payline: A line on a slot machine where winning combinations of symbols must appear for players to win prizes.


  • Quit: To end a gaming session or leave a casino.
  • QR Code: Quick Response code used by some casinos for mobile payments or accessing bonuses.
  • Queen High: Poker hand consisting of a Queen as the highest-ranking card, with no stronger hand present.
  • Quads: In poker, a hand containing four cards of the same rank, also known as four of a kind.
  • Quarter: Slang for a $25 chip used in some casinos, particularly in games like roulette.


  • Roulette: A popular casino game where players bet on the outcome of a spinning wheel containing numbered slots.
  • Rake: The commission or fee charged by the casino for hosting a poker game.
  • RTP (Return to Player): Percentage of all wagered money that a casino game is expected to return to players over time.
  • Reload Bonus: Bonus offered to existing players when they make a subsequent deposit, often as a percentage match of the deposit amount.
  • Roulette: Casino game where players bet on the outcome of a spinning wheel divided into numbered segments.


  • Scatter Symbol: Symbol in slot games that can trigger bonus features or payouts regardless of its position on the reels.
  • Stake: The amount of money wagered on a single bet or spin.
  • Slot Machine: A casino game with spinning reels and various symbols, where players win prizes by matching symbols on active paylines.
  • Surrender: In blackjack, the option for a player to forfeit half of their bet and withdraw from the round after seeing their first two cards and the dealer's up card.
  • Strategy: A planned approach or method used by players to improve their chances of winning in casino games, such as blackjack or poker.


  • Table Limit: The minimum and maximum allowable bets at a table game, set by the casino.
  • Texas Hold'em: A popular variant of poker where players receive two hole cards and use them in combination with five community cards to make the best possible hand.
  • Tournaments: Competitive events where players compete against each other in casino games for prizes.
  • Turnover Requirement: Also known as wagering requirement, the amount of money that must be wagered before bonus funds can be withdrawn.


  • Upcard: In blackjack, the dealer's face-up card is visible to all players at the table.
  • Underdog: Player or team with lower odds of winning in a casino game or sports event.
  • Up to: Phrase used to indicate a range or maximum limit, often seen in bonus offers such as "Up to $500 welcome bonus."


  • Variance: Measure of the risk and reward associated with a particular casino game, ranging from low to high variance.
  • Video Poker: Casino game based on five-card draw poker, played on a machine similar to a slot machine.
  • VIP: An exclusive program offered by casinos to reward high-spending players with special privileges and benefits.


  • Wagering Requirements: Conditions attached to casino bonuses that specify the amount of money players must wager before they can withdraw their bonus winnings.
  • Wager: Amount of money placed as a bet on a casino game or event.
  • Wild Symbol: Special symbol in slot games that can substitute for other symbols to form winning combinations.
  • Welcome Bonus: promotional offer for new players by online casinos, often including bonus funds or free spins.


  • Yield: The total profit generated by a casino from players' bets over a specific period of time.
  • Yield Management: Strategy used by casinos to optimize revenue by adjusting pricing and availability of games and services based on demand.
  • Yield Percentage: Percentage of revenue generated by a casino from its total gaming activities.
  • Yggdrasil: Game developer known for creating innovative and visually stunning slot games and casino software.


  • Zero: Number on the roulette wheel representing neither red nor black, typically used to denote a losing outcome.
  • Zero Liability: Protection offered by some payment methods to users against fraudulent transactions or unauthorized charges.
  • Zigzag Method: Betting strategy in slot games where players wager on a pattern across the reels, believed to increase chances of winning.


Navigating the world of online casinos can be daunting, especially for newcomers. With this comprehensive dictionary, players can gain a better understanding of essential gambling terminology, empowering them to make informed decisions and enjoy their gaming experiences responsibly. Whether you're playing online or in a brick-and-mortar casino, having a grasp of these terms will enhance your enjoyment and help you navigate the diverse landscape of casino gaming.

About the Review Expert

Ashok Lagari

Finance-educated online casino expert & sports content writer. 8+ years' experience. Delivers detailed evaluations aiding players in making informed gaming decisions.