Definition of featherweight noun from the Oxford Advanced Learner's Dictionary

 

featherweight

 noun
noun
BrE BrE//ˈfeðəweɪt//
 
; NAmE NAmE//ˈfeðərweɪt//
 
 
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a boxer weighing between 53.5 and 57 kilograms, heavier than a bantamweight a featherweight champion
See the Oxford Advanced American Dictionary entry: featherweight