Wăl'nut, n.
(wôl'nut) (Synop., § 130), n. [A-S. wealth-hnut, a Welsh or foreign nut, a walnut, from wealth, a foreigner, stranger, a Welshman, Celt, and hnut, a nut; Icel. val-hnut, Sw. valnōt, Dan. val-nōd, D. walnoot, Ger. wallnusz, walnusz, wäl'sche nusz.] (Bot.) A tree, and its fruit, of the genus Juglans. This genus comprehends several species, of which some are natives of the United States, as Juglans nigra, or black walnut; J. cinerea, or butternut; and J. fraxinifolia, or ash-leaved walnut. The European walnut is Juglans regia, a native of Persia. It is cultivated to some extent in the United States.
☞ In some parts of America, several species of Carya, or hickory, are popularly called by this name.