English

Definition of life preserver noun from the Oxford Advanced Learner's Dictionary

 

life preserver

 noun
noun
BrE BrE//ˈlaɪf prɪzɜːvə(r)//
 
; NAmE NAmE//ˈlaɪf prɪzɜːrvər//
 
(North American English)
 
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a piece of material that floats well, or a jacket made of such material, used to rescue a person who has fallen into water, by keeping them above water
See the Oxford Advanced American Dictionary entry: life preserver