reverselight
nounUK /rɪˈvɜːs laɪt/
US /rɪˈvɜːrs laɪt/
A reverselight is a bright white light on the back of a car that turns on when the car goes backward.
The reverselight came on as she backed out of the driveway.
RELATED WORDS
OTHER MEANINGS
2. A light that shows a vehicle is moving in reverse, used as a warning to others.
The reverselight warned pedestrians that the truck was backing up.
3. A lamp on a machine or device that signals it is operating in reverse mode.
The reverselight on the conveyor blinked before the belt changed direction.
4. Informal: a light that helps you see behind you when reversing.
He checked the reverselight before backing into the dark garage.