A "semi-automatic" refers to a type of firearm that automatically reloads after each shot but requires the shooter to pull the trigger for each round fired. This means that once the trigger is pulled, the gun will fire a single bullet, and the next round is loaded into the chamber without any additional action from the user. In contrast to fully automatic firearms, which continue to fire as long as the trigger is held down, semi-automatic weapons provide more control and precision. Common examples of semi-automatic firearms include handguns and rifles, often used for sport shooting, hunting, and self-defense.