restbutton
nounUK /ˈrɛstˌbʌtən/
US /ˈrɛstˌbʌtən/
A rest button is a button you press to take a break or make something stop for a while.
Press the rest button on the toy so it can take a little nap.
OTHER MEANINGS
2. A button that resets a device back to its starting state.
If the game freezes, press the rest button to start over.
3. A soft pad or button you rest your hand on for comfort.
He laid his hand on the rest button beside the keyboard.
4. A button that puts a machine into a low-power resting mode.
The laptop's rest button dims the screen to save power.