fighter

noun

1. A person who fights; a combatant.
2. A warrior; a fighting soldier.
3. A pugnacious, competitive person.
4. (poetic)A person with a strong determination to resist protracted or severe adversity, especially illness.

   “Little weapons / Over the phone / They like to threaten / The life that I know / They say "Get over here and get into the ring" / But I'm not really much of a fighter”

5. A class of fixed-wing aircraft whose primary purpose is to shoot down other aircraft, sometimes accompanied by a secondary purpose of attacking ground targets.
6. (broadly)A class of fixed-wing aircraft whose primary purpose is to shoot down other aircraft, sometimes accompanied by a secondary purpose of attacking ground targets.

   “Task Force 42 consisted of almost two dozen main line spinships, including the carriers Olympus Shadow and Neptune Station. Each of these can launch more than a hundred fighters or ALRs.”

   “I toss around [37,654 tonne] dreadnoughts like they were fighters; dimly aware of the former crews being crushed to liquescence.”

7. A participant in boxing or any martial art.
8. (colloquial)A firefighter.
9. A game with a focus on physical combat.

   “Still, it's excellent software, especially for one-on-one fighting titles such as the King Of Fighters series, classic Street Fighter II variants, and newer one-on-one fighters such as Garou.”