English

Definition of whistle-blower noun from the Oxford Advanced Learner's Dictionary

 

whistle-blower

 noun
noun
BrE BrE//ˈwɪsl bləʊə(r)//
 
; NAmE NAmE//ˈwɪsl bloʊər//
 
 
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(used especially in newspapers) a person who informs people in authority or the public that the company they work for is doing something wrong or illegal
See the Oxford Advanced American Dictionary entry: whistle-blower