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English definition of “buff”

buff

verb [T]  /bʌf/ us  

buff verb [T] (MAKE SHINE)

to rub a surface with a soft material to make it shine: First you apply the wax to the floor, let it dry, and then buff it.

buff

noun [C]  /bʌf/ infml us  

buff noun [C] (PERSON)

a person who is very interested in a subject and knows a lot about it: a history/movie buff

buff

adjective  /bʌf/ infml us  

buff adjective (strong)

having a strong, healthy body with well-developed muscles: During her stage show, the lithe, buff artist dances through two hours of 26 songs and 9 costume changes.
(Definition of buff from the Cambridge Academic Content Dictionary © Cambridge University Press)
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