noun Date: 1841 one that times: as, timepiece , timekeeper , a device (as a clock) that indicates by a sound the end of an interval of time or that starts or stops a device at predetermined times
TIMER
Meaning of TIMER in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012