American Heritage® Dictionary of the English Language, Fourth Edition
- n. A game played by two people, each trying to make a line of three X's or three O's in a boxlike figure with nine spaces.
- n. alternative spelling of tic-tac-toe.
- n. 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
- Probably imitative of the sounds of the original children's game, in which players brought pencils down on a numbered slate with their eyes shut. (American Heritage® Dictionary of the English Language, Fourth Edition)
“He always beats me at everything—precision parking, three-dimensional ticktacktoe, soufflés.”
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