noughts and crosses
noun [ U ] UK uk/ˌnɔːts ən ˈkrɒs.ɪz/ us/ˌnɑːts ən ˈkrɑː.sɪz/ (US tic-tac-toe)
画圈打叉游戏（两人在井字形的9个方格内轮流画圈和叉，谁先把3个圈或叉连成一线即取胜）
a game played on a piece of paper in which two players write either O or X in a pattern of nine squares. It is won by the first player who places three Os or three Xs in a straight line.