big gun

1.
USUKAustraliaCanadaneutral
- A large firearm or heavy artillery piece.
2.
USUKAustraliaCanadainformalidiomatic
- An important, powerful, or influential person, organization, or resource called upon to accomplish a difficult task or to gain advantage.
3.
USUKformalmilitary
- The principal or heaviest weapons in a military force, especially large-caliber guns or long-range armaments.

Examples:

No examples available.