1a. Any of several deciduous trees of the genus Juglans, having pinnately compound leaves and a round, sticky outer fruit wall that encloses a nutlike stone with an edible seed. b. The stone or the ridged or corrugated seed of such a tree. 2. The hard, dark brown wood of any of these trees, used for gunstocks and in cabinetwork.
ETYMOLOGY:
Middle English walnot, from Old English wealhhnutu : wealh, Celt, foreigner + hnutu, nut.