Noun
life preserver consisting of a sleeveless jacket of buoyant or inflatable design
Source: WordNetIn a report released earlier this month, the NTSB said the pilot failed to give the plane’s passengers a required safety briefing, and that Fuddy was wearing a faulty infant life vest. Source: Internet
When I told him he could not go to the deep end of the pool because he could not swim, he put on a life vest and paddled to one end of the pool and back. Source: Internet