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seat belt

or seatbelt

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noun

a belt or strap in an automobile, airplane, etc., fastened around or sometimes diagonally across the midsection to keep the person safely secured, as during a sudden stop.

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Also called safety belt.
Compare lap belt.

Origin of seat belt

First recorded in 1945–50
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for seat belt

seat belt

noun

Also called: safety belt a belt or strap worn in a vehicle to restrain forward motion in the event of a collision
a similar belt or strap worn in an aircraft at takeoff and landing and in rough weather
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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