Jisho

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Noun
1. life-jacket; life-vestSee also ライフベスト
Wikipedia definition
2. Personal flotation deviceA personal flotation device (abbreviated as PFD; also referred to as, lifejacket, life preserver, Mae West, life vest, life saver, cork jacket, buoyancy aid, flotation suit, etc. ) is a device designed to assist a wearer, either conscious or unconscious, to keep afloat. Devices designed and approved by authorities for use by civilians differ from those designed for use by passengers and crew of aircraft (helicopters, airplanes) and of commercial vessels (tugs, passenger ferries, cargo ships).
Read “Personal flotation device” on English Wikipedia
Read “救命胴衣” on Japanese Wikipedia
Read “Personal flotation device” on DBpedia

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