Casino sites speak their own dialect: RTP, wagering, volatility, KYC, sticky bonuses. Misreading any of these terms costs real money — usually through a bonus forfeited or a withdrawal delayed. This glossary collects the vocabulary a 2026 player actually meets, in the order you are likely to meet it.
Terms are defined as the industry uses them; the exact numbers behind them (multipliers, limits, lists) always live in each promotion's own conditions, which is why every guide here ends with "check the current terms".
Account and Access Terms
KYC (Know Your Customer) — the identity verification every licensed casino performs before paying out: photo ID, proof of address, payment method confirmation. Closed-loop policy — the rule that withdrawals return to the deposit method first. Self-exclusion — a voluntary account block for a set period, the strongest responsible gambling tool. Cooling-off — a shorter, reversible pause.
The KYC guide walks through the document process, and the responsible gambling page explains the protection tools in full.
Game Mathematics Terms
RTP (Return to Player) — the long-run payback percentage of a game; 96% RTP means a 4% house edge. Volatility (variance) — how wins are distributed: frequent small ones or rare large ones. Hit frequency — how often any win lands, regardless of size. Max win — the payout cap, usually expressed as a multiple of the bet. RNG (Random Number Generator) — the certified algorithm producing each outcome; every spin is independent.
Bonus Terms
The richest source of confusion, worth a structured list:
- Wagering requirement (playthrough, rollover) — total bets required before bonus winnings withdraw, e.g. 35x.
- Game contribution — the percentage of each bet that counts toward wagering; slots usually 100%, table games far less.
- Sticky bonus — a bonus that can never be withdrawn, only wagered; non-sticky (parachute) bonuses let real money play first.
- Max bet rule — the per-spin cap while wagering; breaking it can void the bonus.
- Free spins — spins of fixed value on named games; winnings usually become bonus funds with their own wagering.
- Cashback — a percentage of net losses returned over a period, sometimes wager-free.
The wagering guide turns these definitions into arithmetic.
Table and Live Casino Terms
| Term | Meaning |
|---|---|
| House edge | The casino's mathematical margin on a bet |
| Even money | A bet paying 1:1 (red/black, odd/even) |
| Side bet | Optional extra bet with a higher house edge |
| Betting window | The timed period for placing live bets |
| Shoe | The device holding multiple card decks |
| Pit / studio | The live casino area the stream comes from |
Payment Terms
Processing time — the casino's approval step, distinct from the payment rail's transfer time. Pending period — the window before approval during which a withdrawal can sometimes be reversed (avoid reversing — it is a budget leak). Network confirmation — the blockchain validation crypto deposits wait for. Conversion fee — the cost of transacting in a currency different from your account's.
The payment methods page maps these terms onto actual timeframes per method.
Tournament and Loyalty Terms
Buy-in — the entry fee for a paid tournament; freeroll — a tournament with no entry fee. Leaderboard — the live ranking table that determines prizes. Rebuy — paying again to restart a tournament attempt. Prize pool — the total rewards distributed across the paying positions, published in each event's rules.
On the loyalty side: comp points are the earn-as-you-play currency many casinos award per wager, convertible to bonuses or cash at a published rate; VIP tiers are status levels that improve cashback rates, limits and support priority as cumulative play grows; rakeback and cashback return a percentage of losses or turnover, and the difference between wager-free and bonus-form returns is, once again, in the terms. None of these change game odds — they discount the cost of play you were going to do anyway.
Using the Glossary
Language precision is a safety tool: most player disputes trace back to a term read casually. When a promotion or a support answer uses a word from this list in a way that surprises you, ask for clarification before acting — customer support handles exactly these questions daily. Combined with the numbers-first articles on RTP and volatility, this vocabulary covers everything the lobby will throw at you.