- 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.
Compare lap belt.
Origin of seat belt
First recorded in 1945–50
Also called safety belt.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for seatbelt
Position your seatbelt tight and low across your hips, like my grandmother wears her support bra.Viral Video of the Day: Comic Flight Attendant
The Daily Beast Video
April 15, 2014
Yu believes that one of the dead teens, whose body was found on the runway, may not have been wearing a seatbelt.Stuck in Limbo After San Francisco Crash
July 9, 2013
As the seatbelt clicked, Mr. Klein said, “I wish I were where that bagel is.”My Own Horace Mann Story and The New York Times Abuse Report
June 7, 2012
She gave me a small pillow and instructed me to put it between my tummy and the seatbelt.You're Pregnant, Have a Drink
October 6, 2010
Allenby looked up at him as Jenkins swung the helmet back and unhooked the seatbelt.Pleasant Journey
Richard F. Thieme
- 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