ticktacktoe

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun Alternative spelling of tic-tac-toe.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun 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