timer

漢語翻譯

n. 計時員, 計時器
【計】 計時器
【化】 定時器; 計時器; 時間繼電器
【醫】 定時器, 時計, 限時器

英文解釋：

名詞 timer:

1. a timepiece that measures a time interval and signals its end
2. (sports) an official who keeps track of the time elapsed
   同義詞：timekeeper
3. a regulator that activates or deactivates a mechanism at set times