Definition of burnish verb from the Oxford Advanced American Dictionary

 

burnish

 verb
verb
NAmE//ˈbərnɪʃ//
 
burnish something(formal)Verb Forms present simple I / you / we / they burnish
 
he / she / it burnishes
 
past simple burnished
 
-ing form burnishing
 
 
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to polish metal until it is smooth and shiny
 
adjective [usually before noun] burnished gold/copper
See the Oxford Advanced Learner's Dictionary entry: burnish