Tic-tac-toe meaning
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.
noun
A game in which two players take turns marking either an X or an O in an open block of nine squares, the object being to complete a vertical, horizontal, or diagonal row of three of one's mark before the other player can.
noun
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Origin of tic-tac-toe
- 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
From American Heritage Dictionary of the English Language, 5th Edition