stopwatch

US /ˈstɑːp.wɑːtʃ/
UK /ˈstɑːp.wɑːtʃ/
"stopwatch" picture
1.

Stoppuhr

a watch with a button that starts or stops the movement of the hands, used for measuring the time taken by an event

:
The coach used a stopwatch to time the runners.
Der Trainer benutzte eine Stoppuhr, um die Läufer zu stoppen.
He clicked the stopwatch to begin the experiment.
Er drückte die Stoppuhr, um das Experiment zu beginnen.