stopwatch

IPA/ˈstɒpwɒtʃ/
KK[stˈɑpwˌɑtʃ]IPA/ˈstɑːpwɑːtʃ/

stopwatch — noun

  • stopwatchsingular
  • stopwatchesplural

1. a small electronic or mechanical device that measures how long something takes,

1.名詞B1
釋義

a small electronic or mechanical device that measures how long something takes, with buttons to start, stop, and reset the timing — often used by coaches, referees, or athletes to time races, laps, or exercises

例句

Chidi pressed his stopwatch button as the runners crossed the start line.

start / stop / reset buttons

The coach used her stopwatch to check each swimmer's lap speed.

coach + lap timing context

同義詞
  • timer

    a broader term; can refer to any device that measures time, not just one designed for precise sports timing

  • chronograph

    more formal term, often used for a high-end watch with a stopwatch function built in

用法筆記

Stopwatches often appear in sports, laboratory experiments, and other situations where precise timing in seconds or milliseconds matters. Digital stopwatches are common on smartphones as an app.

常見錯誤

❌She used a stopwatch to check what time it was.
✅She used a stopwatch to time how long the race lasted.
💡A stopwatch measures duration, not the current time of day.
❌I looked at my stopwatch and saw it was 3 o'clock.
✅I looked at my watch and saw it was 3 o'clock.
💡A stopwatch is for elapsed time, not telling time of day.