haltbutton
nounUK /ˈhɔːltˌbʌtən/
US /ˈhɔːltˌbʌtən/
A halt button is a button you press to make a machine stop.
Press the halt button if the robot starts moving too fast.
OTHER MEANINGS
2. A software control that pauses a running program.
Click the halt button to freeze the game.
3. A big red switch on factory equipment used in emergencies.
The worker hit the halt button when the belt jammed.
4. A virtual button in a video game that stops your character.
I tapped the halt button before the car went off the track.