Gambling Terms Explained

Key Takeaways

• Every term below is defined in one or two sentences — no strategy, just meaning.
• Terms are grouped by where you’ll actually encounter them: casino, sports betting, poker, and bonuses.
• Five terms (RNG, Bonus Bet, Cash Out, Outright Winner, Preflop) get a slightly longer explanation because they’re searched for on their own.

Casino reviews, betting apps and poker rooms all assume you already know their vocabulary. Most of the time you don’t — and the meaning isn’t always obvious from the word itself. “Cash out” doesn’t mean what it sounds like. Neither does “house edge.”

This glossary skips the strategy advice and sticks to definitions. If you want the deeper explanation behind a term, each entry links through to the guide that covers it properly.

Casino terms

RNG Short for Random Number Generator. RNG is the software inside every online pokie, roulette wheel and digital card game that decides the outcome of each spin or hand. Every result is generated independently of the one before it — a losing streak has no bearing on what happens next. For the full breakdown of how this affects RTP and volatility, see How Pokies Work.

RTP (Return to Player) The theoretical percentage of all money wagered on a game that’s returned to players over a very large number of spins. A 96% RTP game returns $96 for every $100 wagered, on average, over the long run — not over your next session. Full explanation in How Pokies Work.

Volatility Describes how a pokie distributes its wins — frequent small payouts versus rare large ones. Neither is “better”; they suit different play styles.

House Edge The mathematical advantage built into a game in the operator’s favour. It’s the mirror image of RTP — a 96% RTP game has a 4% house edge.

Jackpot A large prize available within a casino game. Fixed jackpots stay the same regardless of how much is wagered; progressive jackpots grow with every bet placed until someone wins them.

Free Spins Pre-paid spins on a pokie that don’t draw from your own balance. Usually attached to a welcome bonus or a promotional campaign, and usually restricted to specific games.

Bonus Round A separate feature inside a pokie — often triggered by a specific symbol combination — that can pay out independently of the base game.

Live Dealer Game A casino table game streamed in real time with an actual human dealer, rather than computer-generated outcomes. Roulette, blackjack and baccarat are the most common live-dealer formats.

Sports betting terms

Bookie Short for bookmaker — a business that sets odds and accepts wagers on sporting and racing outcomes. Almost every Australian bookmaker now operates primarily through an app rather than a physical shop.

Betting Market A specific outcome you can wager on within a sporting event. A single AFL match might offer a dozen separate markets — match winner, winning margin, first goalscorer, and more.

Stake The amount of money you place on a single wager. Your potential return is calculated from this figure, not added on top of it.

Multi Bet A single wager built from multiple selections, where every selection has to win for the bet to pay out. Higher potential return, lower probability of winning, by definition.

Same Game Multi A multi bet where every selection comes from the same sporting event — for instance, betting on both the match winner and the first goalscorer in one AFL game.

Outright Winner A bet placed on who will win an entire competition, season or tournament rather than a single match — an AFL Premiership winner or Melbourne Cup winner, for example. These bets can stay open for months before they’re settled. More on outright and advanced betting concepts in the Sports Betting Guide.

Bonus Bet Promotional betting credit issued by a bookmaker rather than cash, typically tied to a sign-up offer or ongoing promotion. Bonus bets almost always carry conditions — minimum odds, expiry dates, or a requirement that only the winnings (not the bonus stake itself) are paid out.

Cash Out A feature that lets you settle a bet before the event finishes, accepting a value the bookmaker offers in place of waiting for the final result. Used to lock in a profit early or limit a loss before things get worse. It’s not the same as withdrawing money from your account — it’s closing an open position mid-event.

Live Betting Wagering placed after an event has already started, with odds updating in real time as the action unfolds.

Arbing Short for arbitrage betting — placing wagers across different bookmakers to exploit pricing differences and lock in a theoretical profit regardless of outcome. Harder to execute in practice than it sounds; covered in detail in the Sports Betting Guide.

Sportsbook Software The backend system bookmakers run on to manage odds, markets, payments and risk. Without it, no modern betting app would function.

Poker terms

Preflop The first betting round in Texas Hold’em, before any community cards are revealed. Players act based only on their two private cards — which makes starting-hand selection one of the most important skills in the game. Full hand-ranking breakdown in the Poker Guide.

Pot The total amount of chips or money currently up for grabs in a hand, contributed by every player still involved.

Bluff A bet or raise designed to represent a stronger hand than you actually hold, with the goal of forcing opponents to fold.

Dealer Button A marker that rotates around the table each hand to indicate the nominal dealer position — it determines betting order, not who physically deals.

Position Where you’re seated relative to the dealer button. Acting later in a betting round means more information about what opponents have done before you decide.

Bonus and promotion terms

Wagering Requirement The amount of betting activity you need to complete before bonus-related winnings become withdrawable, usually expressed as a multiplier — a 20x requirement on a $100 bonus means $2,000 in qualifying wagers. Breakdown of how this works in practice in the Casino Bonuses Guide.

Contribution Rate The percentage of a wager that counts toward a wagering requirement. Pokies often contribute 100%; table games frequently contribute less, or not at all.

Maximum Cashout A cap on how much can be withdrawn from bonus-related winnings, regardless of how much was actually won.

No Deposit Bonus Bonus value — usually free spins or a small amount of bonus funds — offered without requiring a deposit first. Comes with tighter conditions than a standard welcome bonus, since the operator is taking on more risk.

Frequently Asked Questions

What does RNG stand for? Random Number Generator — the software that produces independent, random outcomes for online casino games.

What is a bookie? A bookmaker — a business that creates betting markets, sets odds, and pays out winning wagers on sporting and racing events.

What is a bonus bet? Promotional betting credit provided by a bookmaker, usually as part of a sign-up or ongoing offer, with its own set of conditions attached.

What does outright winner mean? A wager on the eventual winner of an entire competition or tournament, rather than a single match within it.

What does cash out mean in betting? Settling a wager before the event finishes, in exchange for a value the bookmaker offers at that point in time.

What hands should I play in poker? Strong starting hands generally include high pairs, premium suited connectors and high-value ace combinations. The full preflop strategy breakdown is in the Poker Guide.

What is the difference between RTP and house edge? They describe the same mathematical relationship from opposite angles. A 96% RTP equals a 4% house edge.

What is arbing in betting? Arbitrage betting — using pricing differences between bookmakers to create a theoretical profit. Practical execution is harder than the theory suggests.

What is a wagering requirement? The amount of qualifying betting activity required before bonus winnings can be withdrawn, expressed as a multiplier of the bonus amount.

What’s the difference between a multi bet and a Same Game Multi? A standard multi bet combines selections from different events; a Same Game Multi combines selections from a single event.

18+ only. Gambling involves financial risk. If gambling is affecting you, call 1800 858 858.