Definition of life jacket in English:

life jacket

Syllabification: life jack·et

noun

  • A sleeveless buoyant or inflatable jacket for keeping a person afloat in water.
    More example sentences
    • But what happens when you combine an inflatable life jacket with a comfy lightweight vest and an all-season jacket?
    • Two crew members went overboard into the 58-degree water and only one had on an inflatable life jacket.
    • When the ship began to sink, the franchisor left its charge afloat in turbulent waters, without a life jacket.

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Pronunciation: ˌastrə(ʊ)ˈgeɪʃ(ə)n
noun
(in science fiction) navigation in outer space