light horse, any breed of horse that is used primarily for riding or for light work such as pulling buggies. Light horses have their origin in the Middle East and N Africa. All modern breeds of light horse trace their origins to the Arabian horse , usually through the Thoroughbred . Light horses are classified according to training, e.g., racers, trotters, riding horses, and cow horses. See also pony , American saddlebred horse , Appaloosa , Morgan , palomino , Pinto , quarter horse , and Standardbred .
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