The turn refers to the fourth community card dealt face-up on the table, following the flop and preceding the river. After the flop betting round concludes, the turn card is revealed, expanding the community cards available for players to form their best five-card hand. Additionally, the term turn can also refer to the specific betting round that follows the dealing of this fourth community card, where players have another opportunity to bet, check, raise, or fold based on the evolving hand possibilities.