IPA: /ˈʃuːtə/
KK: /ˈʃutɚ/
A person or thing that shoots, often referring to someone who uses a firearm or participates in shooting sports.
The shooter aimed carefully before taking the shot at the target.
Shooter → It is formed from "shoot" (from Old English "sceotan", meaning to throw or to shoot) and "-er" (meaning a person who). A shooter is a person who shoots or throws something.
Think of someone who 'throws' or 'shoots' something — that's why a shooter is a person who does that.