chestnut

1) A horse color which may vary from a red-yellow to golden-yellow. The mane, tail and legs are usually variations of coat color, except where white markings are present. 2) Horny, irregular growths found on the inside of the legs. On the forelegs, they are just above the knees. On the hind legs, they are just below the hocks. No two horses have been found to have the same chestnuts and so they may be used for identification. Also called "night eyes."