井字游戏
ticktacktoe
n : a game in which two players alternately put crosses and
circles in one of the compartments of a 3-by-3 board; the
object is to get a row of three crosses or three circles
before the opponent does [syn: {ticktacktoo}, {tick-tack-toe},
{tic-tac-toe}, {tit-tat-toe}, {noughts and crosses}]