Big Gun Definition

noun

The most important or powerful person in an enterprise or field.

The big guns for the prosecution were its expert witnesses.

American Heritage

An important and influential person.

Webster's New World

Something of the highest value or influence.

American Heritage

A high-ranking military officer.

Webster's New World

(military) A large artillery gun or one of the largest-caliber naval guns (as on a battleship).

Wiktionary

Synonyms:

Other Word Forms of Big Gun

Singular:

big gun

Plural:

big-guns

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