"Rifled" refers to a type of firearm barrel that has spiral grooves cut into its interior surface. These grooves cause the bullet to spin as it travels down the barrel, which stabilizes its flight and improves accuracy. This design is commonly found in rifles, handguns, and shotguns, enhancing their performance compared to smoothbore barrels. The term "rifled" can also apply to other objects, such as cannon or aircraft guns, where similar grooves are used to improve projectile stability. The invention of rifled barrels marked a significant advancement in firearm technology, leading to more effective and precise shooting capabilities.