a boxer; pugilist.
Military. an aircraft designed to seek out and destroy enemy aircraft in the air and to protect bomber aircraft.
a person who fights, struggles, resists, etc.
a person with the will, courage, determination, ability, or disposition to fight, struggle, resist, etc.
an animal, as a dog, trained to fight or having the disposition to fight.

Origin of fighter

before 1000; Middle English; Old English fēohtere. See fight, -er1
Related formsnon·fight·er, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for fighter



a person who fights, esp a professional boxer
a person who has determination
military an armed aircraft designed for destroying other aircraft
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for fighter

Old English feohtere; agent noun from fight (v.). Cf. German Fechter. Meaning "fast military airplane used for combat" is from 1917.

Online Etymology Dictionary, © 2010 Douglas Harper