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

lifebuoy

noun
 
/ˈlaɪfbɔɪ/
 
/ˈlaɪfbuːi/,
 
/ˈlaɪfbɔɪ/
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  1. a piece of material that floats well, often in the shape of a ring, used to rescue somebody who has fallen into water, by keeping them above water
See lifebuoy in the Oxford Advanced American Dictionary
trait
noun
 
 
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