timer
tim‧er /ˈtaɪmə $ -ər/
noun [countable]
1. an instrument that you use to measure time, when you are doing something such as cooking:
Set the timer on the cooker for three minutes. ⇨ egg-timer
2. part-timer/full-timer someone who works part or all of a normal working week
tim‧er /ˈtaɪmə $ -ər/
noun [countable] Word Family: noun: time, overtime, timer, timing, timelessness; adjective: timeless, timely ≠ untimely; verb: time; adverb: timelessly

1. an instrument that you use to measure time, when you are doing something such as cooking:
2. part-timer/full-timer someone who works part or all of a normal working week