Definition of buff verb from the Oxford Advanced American Dictionary

 

buff

 verb
verb
NAmE//bʌf//
 
buff something (up)Verb Forms present simple I / you / we / they buff
 
he / she / it buffs
 
past simple buffed
 
-ing form buffing
 
 
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to polish something with a soft cloth She buffed the silver with a cloth. Phrasal Verbsbuff upbuff somebody/something up
See the Oxford Advanced Learner's Dictionary entry: buff