Big Gun definition

Big Gun

Topics Big Gun Definition

WordNet

(1) An important influential person

"He thinks he's a big shot"

"She's a big deal in local politics"

"The Qaeda commander is a very big fish"

WiktionaryText

big gun

A large-caliber artillery piece.
(Figurative extension of the sense above) Someone who is powerful or influential most often in plural form.

If this doesn't work, they'll have to bring in the big guns.