Oxford Dictionary English noughts and crosses nounnoun BrE BrE//ˌnɔːts ən ˈkrɒsɪz// ; NAmE NAmE//ˌnɔːts ən ˈkrɔːsɪz// (British English) (North American English tic-tac-toe) [uncountable] Board games, Children's games Add to my wordlistjump to other results enlarge image a simple game in which two players take turns to write Os or Xs in a set of nine squares. The first player to complete a row of three Os or three Xs is the winner. See related entries: Board games, Children's gamesCheck pronunciation: noughts and crosses oxfordlearnersdictionaries.com