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Definition of lifeboat noun from the Oxford Advanced Learner's Dictionary

picture of a lifeboat

lifeboat

noun

lifeboat pronunciation English

ˈlaɪfbəʊt

lifeboat pronunciation American

ˈlaɪfboʊt

1 a special boat that is sent out to rescue people who are in danger at seaa lifeboat crew/station2 a small boat carried on a ship in order to save the people on board if the ship sinks