rearbumper
nounUK /ˌrɪəˈbʌmpə/
US /ˌrɪrˈbʌmpər/
The back part of a car that protects it if something hits it from behind.
The car behind us tapped our rearbumper at the red light.
OTHER MEANINGS
2. A protective bar at the back of a truck or bus.
The truck's rearbumper was scratched from the loading dock.
3. The rear cushioning part of a baby stroller.
She wiped the rearbumper of the stroller after the park.
4. A slang term for the backside of a person.
He slipped and landed on his rearbumper.