(n.) One of a body of cavalry.

breaker breeder buckaroo caballero cattleman cavalier cavalryman chevalier circus rider cow keeper cowboy cowgirl cowman cowpuncher dairy farmer dairyman equerry equestrian equestrienne farrier gaucho grazier groom horse soldier horseback rider horsebacker horseman horseshoer horsewoman hostler jockey knight mounted policeman postboy postilion puncher rancher ranchero ranchman rider roughrider sheepman stableboy stableman steeplechaser stock raiser stockbreeder stockkeeper stockman tamer trainer trick rider vaquero