| Postboy 1. (n.) One who rides post horses; a position; a courier. 2. (n.) A boy who carries letters from the post. Thesaurus Entries 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 |