noun Date: 1797 the act or process of making spiral grooves, a system of spiral grooves in the surface of the bore of a gun causing a projectile when fired to rotate about its longer axis
RIFLING
Meaning of RIFLING in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012