1. (noun)ticktacktoe, ticktacktoo, tick-tack-toe, tic-tac-toe, tit-tat-toe, noughts and crosses a game in which two players alternately put crosses and circles in one of the compartments of a squaregrid of nine spaces; the object is to get a row of three crosses or three circles before the opponent does
Definition of 'ticktacktoe' 
