timer
//ˈtaɪmər//
Noun
timerSingular
timersPlural
1
A device that measures, records, or controls time, especially one that can be set to activate or deactivate something at a specific time.
I set the timer for ten minutes.
2
A person who measures or records the time taken by a process or activity, such as in sports or experiments.
The timer recorded each runner's finish time.