Note: ☞ In some parts of America, especially in New England, the name walnut is given to several species of hickory (Carya), and their fruit.
Etymology: OE. walnot, AS. wealh-hnutu a Welsh or foreign nut, a walnut; wealh foreign, strange, n., a Welshman, Celt (akin to OHG. Walh, properly, a Celt, from the name of a Celtic tribe, in L. Volcae) + hnutu a nut; akin to D. walnoot, G. walnuss, Icel. valhnot, Sw. valnöt, Dan valnöd. See Nut, and cf. Welsh