chestnut

(noun) wood of any of various chestnut trees of the genus Castanea.

(noun) any of several attractive deciduous trees yellow-brown in autumn; yield a hard wood and edible nuts in a prickly bur. Synonyms: chestnut tree.

(noun) edible nut of any of various chestnut trees of the genus Castanea.

(noun) the brown color of chestnuts.

(noun) a small horny callus on the inner surface of a horse's leg.

(noun) a dark golden-brown or reddish-brown horse.

(adj) (of hair or feathers) of a golden brown to reddish brown color. Examples: "A chestnut horse." "Chestnut hair."