breakbutton
nounUK /ˈbreɪkˌbʌtən/
US /ˈbreɪkˌbʌtən/
A breakbutton is a button you press to stop something for a little while.
Press the breakbutton on the toy robot so it can rest.
OTHER MEANINGS
2. A button that opens or releases a latch.
He pushed the breakbutton to open the gate.
3. A key on a device that interrupts a running program.
Hit the breakbutton to stop the game.
4. A small button used to take a short rest during work.
The app has a breakbutton that reminds you to stretch.