dark bay or brown
A horse color that ranges from brown with areas of tan on the shoulders, head and flanks, to a dark brown, with tan areas seen only in the flanks and/or muzzle. The mane, tail and lower portions of the legs are always black unless white markings are present.
dead heat
Two or more horses finishing a race in a tie.
dead track
Racing surface lacking resiliency.
declared
In the United States, a horse withdrawn from a stakes race in advance of scratch time. In Europe, a horse confirmed to start in a race.
deep stretch
A position very close to the finish line in race.
Derby
A stakes event for three-year-olds.