3Bet is a popular term in poker that refers to the third bet made in a betting round, typically following an initial raise and a re-raise. It signifies a strong hand or a strategic play, as players often use it to apply pressure on opponents and assert dominance in the pot. A well-timed 3Bet can force weaker hands to fold, allowing the player to take control of the game. Understanding when and how to 3Bet effectively is crucial for success in both cash games and tournaments, making it a key tactic for serious poker players.