Racer

n.	1.	One who, or that which, races, or contends in a race; esp., a race horse. And bade the nimblest racer seize the prize. - Pope.
	2.	(Zool.) The common American black snake.
	3.	(Mil.) One of the circular iron or steel rails on which the chassis of a heavy gun is turned.

Noun	1.	racer - someone who drives racing cars at high speeds Synonyms: automobile driver, race driver
	2.	racer - a fast car that competes in races Synonyms: race car, racing car
	3.	racer - an animal that races
	4.	racer - slender fast-moving North American snakes

Jehu, amateur athlete, archer, athlete, ballplayer, baseballer, baseman, batter, battery, blocking back, bowman, catcher, center, coach, competitor, cricketer, defensive lineman, end, entry, favorite, flier, footballer, games-player, gamester, goer, guard, hell-driver, horse racer, hummer, hustler, infielder, jock, jockey, jumper, lineman, mudder, offensive lineman, outfield, outfielder, plate horse, plater, player, pole horse, poloist, pony, professional athlete, pugilist, quarterback, race horse, runner, scorcher, sizzler, skater, speed demon, speeder, sport, sportsman, stable, stake horse, staker, starter, steeplechaser, stepper, string, tackle, tailback, toxophilite, turfman, wingback, wrestler