Timer definition

Timer

Topics Timer Definition

WordNet

(1) A timepiece that measures a time interval and signals its end

(2) A regulator that activates or deactivates a mechanism at set times

(3) (sports) an official who keeps track of the time elapsed

WiktionaryText

Someone or something which times.
Especially, a device used to measure the amount of time something takes, or a device that can be set to sound an alarm after a certain amount of time.