pigeon clock

English

Noun

pigeon clock (plural pigeon clocks)

1. A timing device used to officially record the exact time a pigeon returns to its loft in a race.
   • 1982, Paul Radley, My Blue-Checker Corker and Me, Sydney: Fontana/Collins, page 120:

     When Corker trapped in Monte put her ring in the hatch of the pigeon clock[.]