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.
The stone or the ridged or corrugated seed of such a tree.
The hard, dark brown wood of any of these trees, used for gunstocks and in cabinetwork.
[Middle English walnot, from Old English wealhhnutu : wealh, Celt, foreigner + hnutu, nut.]
wal'nut adj.
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