Rear-end

[reer-end] /ˈrɪərˈɛnd/

verb (used with object)
1.
to drive a vehicle or other conveyance so as to strike the back end of (another vehicle):
My car was rear-ended by another driver on the highway.
2.
(of a moving vehicle or other conveyance) to strike the back end of (another vehicle or object):
A freight train rear-ended the commuter train this morning.
noun
1.
the hindmost part of something.
2.
Informal. the buttocks; behind.
n.

“buttocks,” 1937, from rear (adj.) + end (n.). As a verb, “to collide (with another vehicle) from behind,” from 1976. Related: Rear-ended; rear-ending.

noun phrase

(also rear) The buttocks; ass: She’s a pain in the rear end (1937+, variant 1796+)

verb

To hit a car from the rear: his Grand Am was rear-ended (mid-1970s+)
1.
The back part of anything, especially a vehicle, as in There’s a large dent in the rear end of the car.
2.
The buttocks, as in I’m afraid these pants don’t fit my rear end. The noun rear alone has been used in both these senses, the first since the late 1700s and the second since the mid-1900s. The addition of end occurred in the first half of the 1900s.

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