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English definition of “lifebelt”

lifebelt

noun [C]     /ˈlaɪf.belt/ (also lifebuoy)
a piece of equipment , usually a ring filled with air or light material that floats , designed to help you float if you fall into water Parts of ships and boats
(Definition of lifebelt noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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