1. System of signalling by hand signs used by bookmakers at racetracks
   "The bookmakers used ticktack to communicate odds changes across the racetrack";
   - tic-tac [Brit]

1. Make a sound like a clock or a timer
   "The old grandfather clock ticktacked in the hallway";
   - tick, ticktock, beat

Derived forms: ticktacked, ticktacking, ticktacks

Type of: go, sign, signal, signaling [N. Amer], signalling [Brit, Cdn], sound

Encyclopedia: Ticktack