[rear end] {n.}
1. The back part (usually of a vehicle)
* /The rear end of our car was smashed when we stopped suddenly and the car behind us hit us./
- Often used like an adjective, with a hyphen.
* /A head-on crash is more likely to kill the passengers than a rear-end crash./
Contrast: HEAD-ON. 2. Rump; backside.
* /Bobby's mother was so annoyed with his teasing that she swatted his rear end./