Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

  

buoy

noun [C]
 
 
/bɔɪ/ US  /ˈbuː.i/

Definition

a floating object on the top of the sea, used for directing ships and warning them of possible dangerNavigation and shipwrecksBoats and sailing craftPassenger, cargo and military ships
(Definition of buoy noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

“buoy” in other dictionaries

Word of the Day

a cloud on the horizon

something which threatens to cause problems or unhappiness in the future

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More