Definition of young gun
- He's one of the young guns at the law firm.
: being in the first or an early stage of life, growth, or development
: of an early, tender, or desirable age for use as food or drink
: young persons : youth
: immature offspring
: a single recently born or hatched animal
: a piece of ordnance usually with high muzzle velocity and comparatively flat trajectory
: a portable firearm (such as a rifle or handgun)
: a device that throws a projectile
: to fire on
: to open up the throttle of so as to increase speed
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