Akademik

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

noun [noncount]

Brit : ↑tic-tac-toe

ˌnoughts and ˈcrosses [noughts and crosses] (BrE) (NAmE ˌtic-tac-ˈtoe) noun uncountable

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 also: ↑tic-tac-toe