stopswitch
nounUK /ˈstɒp.swɪtʃ/
US /ˈstɑːp.swɪtʃ/
A stopswitch is a button or lever you press to make a machine stop.
Press the stopswitch if the machine starts to shake.
RELATED WORDS
OTHER MEANINGS
2. A safety device on a treadmill or exercise machine that stops it if the user falls.
Clip the stopswitch to your shirt before you start running.
3. A switch that cuts power to an engine or motor.
The mechanic flipped the stopswitch to shut down the engine.
4. A control used to halt a conveyor belt or production line.
Workers hit the stopswitch when they saw a jam on the line.