Definition of politburo noun from the Oxford Advanced American Dictionary

 

politburo

 noun
noun
NAmE//ˈpɑlətˌbyʊroʊ//
 
, NAmE//ˈpoʊlətˌbyʊroʊ//
 
(pl. politburos)
 
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the most important committee of a Communist party, with the power to decide on policy
See the Oxford Advanced Learner's Dictionary entry: politburo