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adj. Smaller in caliber than the barrel of the gun from which it was fired. Used of projectiles.

adj. Of or relating to such projectiles.

adj. Smaller than the caliber of a firearm.

adj. Smaller than the caliber of a firearm.

Of less caliber: said of a projectile as compared with the bore of the gun. See subcaliber projectile, under projectile.

subcalibre   

40-millimeter    100-pound    armor-piercing    line-throwing    small arms