ticktack
- n system of signalling by hand signs used by bookmakers at racetracks
- v make a sound like a clock or a timer
- A hundred metronomes went ticktack, ticktack during the 15-minute performance of Gyrgi Ligeti's composition, Pome Symphonique.
- Derby-goers missed Epsom's flower-decked grandstands, the grey-toppered swells, fortunetelling gypsies and wigwagging ticktack men (scouts for bookies).