IPA: /ˈɡʌnˌfaɪtə/
KK: /ˈɡʌnˌfaɪtər/
A person who takes part in fights using guns, often in a wild west or historical context.
The gunfighter faced his opponent in the dusty street at high noon.
Gunfighter → It is formed from "gun" (from Middle English *gunne*, meaning a type of firearm) and "fighter" (from Old English *feohtan*, meaning to fight). The word "gunfighter" refers to a person who fights using a gun.
Think of someone who uses a 'gun' and is a 'fighter' — that's why a gunfighter is a person who fights with a gun.