Gambling Glossary

Online gambling comes with its own language. Terms such as wagering requirement, RTP, volatility, KYC and maximum cashout can be confusing if you are unfamiliar with how online casinos and sportsbooks work.

This gambling glossary explains common casino, betting, payment and regulatory terms in plain English.

A

Accumulator

A sports bet combining several selections into one wager. Every selection normally needs to win for the accumulator to pay out.

Affiliate

A website or publisher that refers visitors to a gambling operator and may receive a commission if those visitors register, deposit or generate qualifying activity.

AML

AML stands for Anti-Money Laundering. Gambling operators may carry out checks designed to prevent criminal funds from being deposited, transferred or withdrawn through gambling accounts.

B

Bankroll

The amount of money a player has set aside for gambling.

Bet Limit

The minimum or maximum amount that can be wagered on a game or betting market.

Bonus

A promotional offer provided by a casino or sportsbook. Bonuses may include matched deposits, free spins, cashback, free bets or other rewards.

Bonus Code

A code entered during registration or deposit to activate a particular promotion.

Bonus Funds

Promotional money credited by a casino. Bonus funds may be subject to wagering requirements, game restrictions and other conditions before becoming withdrawable.

See our Casino Bonus Terms guide for a more detailed explanation.

C

Cashback

A promotion that returns a percentage of qualifying losses over a specified period.

Cashout

Depending on the context, cashout can mean withdrawing money from a casino account or settling a sports bet before the event has finished.

Casino Group

A company or collection of related companies that owns or operates multiple casino brands.

Our Casino Groups guide explains how brands, operators and parent companies can be connected.

Chargeback

A payment reversal initiated through a card issuer or bank. Chargebacks should not be treated as a substitute for a legitimate casino complaint process.

Cold Wallet

A cryptocurrency wallet kept offline for additional security.

Crypto Casino

An online casino that accepts one or more cryptocurrencies for deposits, withdrawals or both.

D

Deposit

Money transferred into a gambling account.

Deposit Limit

A responsible gambling control that limits how much money can be deposited during a particular period.

Dormant Account

An account that has not been used for a specified period. Some operators may apply inactivity rules or fees, depending on their terms and jurisdiction.

E

E-Wallet

An electronic payment account that can be used to send and receive money online.

Early Cashout

A sportsbook feature allowing a bettor to settle a wager before the event has finished. The offered amount may be higher or lower than the original stake depending on how the bet is progressing.

Encryption

Technology used to protect information while it is being transmitted or stored.

F

Free Bet

A promotional sports betting credit used to place a wager without using some or all of the player’s own cash.

Free Spins

A casino promotion providing a set number of spins on selected slot games.

Fixed Jackpot

A jackpot with a predetermined maximum prize rather than one that continually increases as players wager.

G

Gambling Licence

Authorisation issued by a gambling regulator allowing an operator to provide specified gambling services under particular conditions.

Game Contribution

The percentage of a wager that counts towards completing a bonus wagering requirement.

Geolocation

Technology used to determine a player’s physical location. It is commonly used in regulated markets where gambling is only permitted within certain jurisdictions.

H

Hit Frequency

The approximate frequency at which a slot produces a winning combination. It does not indicate the size of those wins.

Hot Wallet

A cryptocurrency wallet connected to the internet and used for sending or receiving digital assets.

I

In-Play Betting

Betting on an event after it has already started.

Instant Withdrawal

A term sometimes used when a casino processes an approved withdrawal very quickly. It does not always mean the money will reach the player’s bank or payment account instantly.

Our Casino Withdrawals guide explains processing times, limits and verification in more detail.

J

Jackpot

A large casino prize that may be fixed or progressive.

Jackpot Slot

A slot game offering one or more jackpot prizes in addition to standard game wins.

K

KYC

KYC stands for Know Your Customer. It refers to identity checks used by gambling operators to confirm details such as a player’s identity, age and address.

L

Live Casino

Online casino games presented by real dealers and streamed to players over the internet.

Licence Holder

The legal company or entity named on a gambling licence.

Loss Limit

A responsible gambling control that restricts the amount a player can lose during a specified period.

M

Maximum Bet

The highest amount that may be wagered on a game, betting market or while a bonus is active.

Maximum Cashout

The maximum amount that can be withdrawn from a promotion, bonus or specific gambling product.

Megaways

A slot mechanic in which the number of symbols appearing on each reel can change between spins, creating a variable number of possible winning combinations.

Minimum Deposit

The smallest amount an operator allows a player to deposit or the minimum amount required to qualify for a particular promotion.

N

No-Deposit Bonus

A promotion that provides bonus funds, free spins or another reward without requiring an initial deposit.

Net Loss

The amount lost after eligible winnings are deducted from qualifying wagers. The exact calculation depends on the operator’s terms.

O

Odds

A representation of the potential return on a sports bet and the bookmaker’s assessment of the probability of an outcome, including its margin.

Operator

The company responsible for running a casino, sportsbook or other gambling service.

Offshore Casino

An online casino operated or licensed outside the player’s home jurisdiction. An offshore licence does not automatically mean the casino is legally permitted to accept players everywhere.

See our Gambling Laws guide for more information about local and overseas licensing.

P

Payline

A pattern across a slot’s reels used to determine winning symbol combinations.

Pending Withdrawal

A withdrawal request that has been submitted but has not yet been approved and sent by the casino.

Progressive Jackpot

A jackpot that increases over time, usually as qualifying wagers are placed, until somebody wins it.

Provably Fair

A cryptographic system used by some online gambling games that allows players to verify aspects of the randomness or fairness of individual game results.

R

Random Number Generator

A system used to generate random game outcomes in many online casino games. It is commonly abbreviated to RNG.

Responsible Gambling

Policies, tools and practices intended to help players manage gambling and reduce the risk of gambling-related harm.

Our Responsible Gambling page contains further information and support resources.

RNG

Short for Random Number Generator. RNG technology is used by many online casino games to produce unpredictable results.

RTP

RTP stands for Return to Player. It is the theoretical percentage of money wagered on a game that is expected to be returned to players over a very large number of bets.

An RTP of 96% does not mean that an individual player will receive $96 back from every $100 wagered. Short-term results can vary considerably.

S

Self-Exclusion

A responsible gambling measure allowing a person to block themselves from gambling with an operator or, in some jurisdictions, multiple operators for a specified period.

Session Limit

A control that limits how long a player can gamble during a session.

Slot Volatility

A description of how a slot’s wins are generally distributed. Lower-volatility games tend to produce smaller wins more frequently, while higher-volatility games tend to produce less frequent but potentially larger wins.

Source of Funds

Information or documentation used to establish where money being used for gambling came from.

Sportsbook

A gambling operator or section of a gambling website offering betting on sports and other events.

Stake

The amount of money risked on a casino game or bet.

T

Terms and Conditions

The contractual rules governing a player’s relationship with a casino or sportsbook.

Two-Factor Authentication

An account security method requiring a second form of verification in addition to a password. It is 2FA.

Our Casino Safety guide covers account, payment and online security in more detail.

V

VIP Programme

A loyalty programme that may provide additional rewards or services to eligible players based on gambling activity or other criteria.

Volatility

A measure commonly used to describe the risk profile of a slot game and the general pattern of its payouts.

W

Wager

Another word for a bet or stake.

Wagering Requirement

The amount of qualifying betting activity that you must complete before certain bonus funds or winnings become withdrawable.

For example, a $100 bonus with a 20x bonus wagering requirement would require $2,000 in qualifying wagers.

For more detail, see our Casino Bonus Terms guide.

Wallet Address

A string of characters used to send or receive cryptocurrency.

Welcome Bonus

A promotional offer available to eligible new customers after registration and, in many cases, a qualifying deposit.

White Label

A business arrangement where a casino brand uses technology, infrastructure or other services supplied by a third-party platform provider.

Withdrawal

The process of transferring funds from a gambling account to a bank account, card, e-wallet, cryptocurrency wallet or another supported payment method.

Withdrawal Limit

The maximum amount a casino allows a player to withdraw during a particular period.

Why Gambling Terms Matter

Understanding gambling terminology makes it easier to compare casinos, bonuses, games and payment conditions.

Terms such as RTP, wagering requirement, maximum cashout and KYC can directly affect how a casino account works and when you can withdraw money.

If a term in a casino’s conditions is unclear, ask the operator for clarification before accepting the promotion or depositing.

Learn More About Online Casinos

Topboss Group publishes guides covering the areas players most commonly need to understand before choosing an online casino.

You can also read our guides to Casino Withdrawals, Casino Bonus Terms, Casino Groups, Gambling Laws and Casino Safety.

You can also browse our online casino reviews for information about individual gambling operators.