fighter

Noun

Synonyms: combatant battler belligerent scrapper fighter aircraft attack aircraft champion hero paladin

WordNet 3.0

Noun (3)

someone who fights (or is fighting)Synonyms: combatant battler belligerent scrapper
a high-speed military or naval airplane designed to destroy enemy aircraft in the airSynonyms: fighter aircraft attack aircraft
someone who fights for a causeSynonyms: champion hero paladin

Webster's Dictionary (GCIDE)

Fighter \Fight"er\ (f[imac]t"[~e]r), n. [AS. feohtere.]

1.One who fights; a combatant; a warrior. --Shak. [1913 Webster]

2.A boxer; a pugilist. [PJC]

3.A person with the determination and will to persist through great difficulty to achieve a goal; one with the courage to fight and resist an opponent, and to struggle with all one's powers. [PJC]

4.(Mil.) A military aircraft designed to seek out and destroy enemy aircraft; it is usually smaller and more maneuvarable than aircraft designed specifically for bombing. However, hybrid fighter-bomber aircraft that perform both functions also are used. [PJC]