rear end

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rear end

1. noun Literally, the rear-most part of something. There is a dining car at the rear end of the train.
2. noun, euphemism By extension, the buttocks. Does my rear end look big in these pants?
3. verb To hit another car from behind with one's own. Usually hyphenated. The other driver was definitely at fault—I was just sitting at a red light when he rear-ended me!
See also: end, rear
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

rear end

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.
See also: end, rear
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

rear (end)

n. the tail end; the buttocks. (Euphemistic.) The dog bit her in the rear end.
See also: end, rear
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
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References in periodicals archive ?
Another interesting study, published this year in Spine, investigated the effect of volunteer subject awareness on occupant kinematics in low-speed rear-end collisions.
Improving communication between drivers -- at least in theory -- can reduce the risk of rear-end crashes.
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The organisation says the classic rear-end shunt, caused by the driver ahead not going when you think he's going, can be avoided by such observation.
Documents revealed that the automaker was well aware that the collapse of front seats under ordinary rear-end collisions at less than 20 mph would cause the seat's occupants--even when belted--to ramp up and out of the seats and strike either the occupants sitting behind them or some portion of the rear of the car.
New designs of seats and head restraints are reducing neck injuries among car occupants involved in rear-end crashes, research from the Insurance Institute for Highway Safety indicates.
In new investigations led by Strayer, 110 college students operating a driving simulator caused more rear-end collisions and reacted more slowly to vehicles braking in front of them during periods when they talked on a hands free cell phone.
The Arizona Attorney General claims the fuel tank is vulnerable in a rear-end shunt.
The rear-end crash in the westbound lanes was witnessed by several other motorists, and police asked that anyone with additional information contact them.
Rear-end shunts are a common sight at roundabouts and now an advanced driver's group has published advice on how to avoid such situations.
installed the world's first automatic brake to reduce the chances of a rear-end collision in its luxury Inspire sedan last June to initiate moves to commercialize an advanced safety vehicle (ASV).