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English definition of “big fish/gun/noise/shot”

big fish/gun/noise/shot

(US also big wheel) informal
a person who has an important or powerful position in a group or organization: She's a big gun in city politics. He's a big shot in advertising.Important people and describing important peopleFamous peopleWealthy people
(Definition of big fish/gun/noise/shot from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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