3-BetThe third bet in a sequence; a re-raise of the original raise before the flop.4-BetA re-raise over a 3-bet, typically representing a very strong or polarized range.C-BetA continuation bet made by the pre-flop raiser on the flop.Check-RaiseChecking with the intent to raise after an opponent bets on the same street.Donk BetAn out-of-position bet into the pre-flop aggressor, often considered unorthodox.OverbetA bet larger than the current pot size, used to polarize your range.BarrelA continuation bet on a later street, such as a second barrel on the turn.OpenThe first voluntary raise pre-flop. Also called RFI (Raise First In).LimpCalling the big blind pre-flop instead of raising. Generally considered a weak play.SqueezeA large 3-bet made after an open raise and one or more callers.JamGoing all-in. Also called shoving, shipping, or pushing.Snap CallCalling a bet instantly without hesitation, indicating a very strong hand or easy decision.FlatCalling a raise (instead of re-raising) with a hand that could justify a raise. Also called "flatting."Fold EquityThe value gained from the chance that your opponent will fold to your bet.