Barrel
A bet on a particular street, usually as a continuation of aggression. "Double barrel" means betting flop and turn; "triple barrel" adds the river.
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What Is Barrel?
Barreling refers to a player continuing to apply pressure with bets across multiple streets after taking the initiative, most commonly after raising preflop and continuation betting the flop. Double and triple barreling are important bluffing and value-betting tools, since continued aggression can fold out hands that called earlier streets. Successful barreling requires reading the board runout, opponent tendencies, and remaining stack sizes to know when continued aggression is likely to work.
Examples
A player raises preflop, bets the flop, and bets again on the turn -- this is called double barreling.
Triple barreling a scare card on the river can fold out medium-strength hands that called the first two streets.
Strategy Tips
Choose barrel bluffs on boards where scare cards make it plausible you hold a strong hand, since blank runouts rarely change an opponent's range enough to fold. Be mindful of your opponent's calling tendencies -- barreling against a calling station rarely succeeds as a bluff. Use barreling for value as well as bluffs, since continuing to bet strong hands across multiple streets maximizes the money you extract. Track how often you barrel and win the pot to evaluate whether your barreling frequency is well-calibrated.