rear-end
verb1
Automotive, Transport, Vehicles Of a vehicle, to strike (another vehicle) from behind.
noun, verb — 3 senses
The back or hindmost part of anything, such as a car.
Slang The buttocks.
Automotive, Transport, Vehicles Of a vehicle, to strike (another vehicle) from behind.
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — authors: page histories for rear end and rear-end.