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Noun: big fish
Usage: informal
  1. An important influential person
    "the Qaeda commander is a very big fish";
    - big shot [informal], big gun [informal], big wheel [N. Amer, informal], big cheese [informal], big deal [informal], big enchilada [informal], head honcho [N. Amer, informal], big noise [informal], big name [informal]

Derived forms: big fish

Type of: important person, influential person, personage

Encyclopedia: Big fish