Definitions for "Standardbred"
Breed of horse popular as a harness racer.
An American breed of horse developed for harness racing.
The breed of horse used in harness racing, consisting of trotters and pacers. The term originates from the standard set in 1879 by the National Association of Trotting Horse Breeders in America, whereby a horse had to trot a distance of one mile in not more than 2 minutes 30 seconds to qualify for registration in the new breed.