a breed of horse, originally from America, typically having a spotted rump
Word origin
C19: perhaps from Palouse, river in Idaho
Appaloosa in American English
(ˌæpəˈluːsə)
noun
one of a hardy breed of riding horses, developed in the North American West, having a mottled hide, vertically striped hoofs, and eyes that show a relatively large proportion of white
Word origin
[1920–25, Amer.; orig. uncert.; perh. to be identified with Opelousa a Louisiana tribal name (compare opelousas poney, recorded in a G text of 1849), though the breed is traditionally associated withthe Nez Percé people and the Palouse River (W Idaho)]