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life jacket

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noun
a sleeveless jacket of buoyant or inflatable construction, for supporting the wearer in deep water and preventing drowning.
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Also called life vest; British, air jacket.

Origin of life jacket

First recorded in 1865–70
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use life jacket in a sentence

British Dictionary definitions for life jacket

life jacket

noun
an inflatable sleeveless jacket worn to keep a person afloat when in danger of drowning
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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