CHESTNUT

I. noun Etymology: Middle English chasteine, chesten ~ tree, from Anglo-French chastein, chestain, from Latin castanea, from Greek kastanea Date: 14th century 1. any of a genus ( Castanea ) of trees or shrubs of the beech family, the edible nut of a ~, the wood of a ~, a grayish to reddish brown, horse ~ , a ~-colored animal, a callosity on the inner side of the leg of the horse, 6. an old joke or story, something (as a musical piece or a saying) repeated to the point of staleness, II. adjective Date: 1555 of the color ~, of, relating to, or resembling a ~