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


life jacket

BrE BrE//ˈlaɪf dʒækɪt//
; NAmE NAmE//ˈlaɪf dʒækɪt//
(North American English also life vest) Water sports
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a jacket without sleeves, that can be filled with air, designed to help you float if you fall in water See related entries: Water sports
See the Oxford Advanced American Dictionary entry: life jacket