big gun Meaning in the Cambridge English Dictionary
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Meaning of “big gun” in the English Dictionary

"big gun" in American English

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big gunnoun [C]

 us   /ˈbɪɡ ˈɡʌn/ (also big shot, big wheel,  /ˈbɪɡ ˌʃɑt/  /ˈbɪɡ ˈhwil, ˈwil/ )
someone who has an ​important or ​powerfulposition: Their ​lawyer, a big gun from Detroit, ​commissioned a ​bunch of ​surveys to show that ​theirproductsmet the state's ​standards.
(Definition of big gun from the Cambridge Academic Content Dictionary © Cambridge University Press)

"big gun" in Business English

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big gunnoun [C]

uk   us   informal
a ​person or ​company with a lot of ​power and ​influence: The ​big guns of the ​internet are set to ​invest tens of millions of ​pounds in the ​technology.
(Definition of big gun from the Cambridge Business English Dictionary © Cambridge University Press)
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