Shooter (noun)

1. A person who shoots a gun or other weapon.
2. A person who plays a shooting game or sport.
3. A device used to shoot something such as a gun.

Origin:

Shooter first recorded in the late 16th century, it is an occupational name for a person who shoots with a bow and arrow, or a gun.

Examples:

1. The police are searching for the shooter who killed three people.
2. He was a skilled shooter and won several awards for marksmanship.
3. The shooter game is one of the most popular games on the internet.
4. The shooter was armed with a handgun.
5. The shooter made a perfect shot.