English

Definition of heavy hitter noun from the Oxford Advanced Learner's Dictionary

 

heavy hitter

 noun
noun
BrE BrE//ˌhevi ˈhɪtə(r)//
 
; NAmE NAmE//ˌhevi ˈhɪtər//
 
(informal, especially North American English)
 
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a person with a lot of power, especially in business or politics
See the Oxford Advanced American Dictionary entry: heavy hitter