1.wood of any of various chestnut trees of the genus Castanea
2.any of several attractive deciduous trees yellow-brown in autumn; yield a hard wood and edible nuts in a prickly bur
3.edible nut of any of various chestnut trees of the genus Castanea
4.a small horny callus on the inner surface of a horse's leg
5.a dark golden-brown or reddish-brown horse
6.used of hair; of a golden brown to reddish brown color;
a chestnut horse