noughts and crosses

Từ điển WordNet v3.1 - WordNet Dictionary

noun

a game in which two players alternately put crosses and circles in one of the compartments of a square grid of nine spaces;
the object is to get a row of three crosses or three circles before the opponent does
• Syn:
ticktacktoe, ticktacktoo, tick-tack-toe, tic-tac-toe, tit-tat-toe
• Hypernyms:
board game