1. a repetitive ticking sound
2. the game of tic-tac-toe
Usage: chiefly British

1. to make a repetitive ticking sound

Examples

• The old clock made a steady ticktack throughout the night.
• We could hear the ticktack of the metronome from the music room.
• The children played ticktack on a piece of paper during recess.
• She drew a ticktack grid and challenged her brother to a game.
• The typewriter keys began to ticktack as she started writing.
• Rain began to ticktack against the window panes.
• The grandfather clock would ticktack loudly in the hallway.