ˈwȯl(ˌ)nət, usu -əd.+V noun
Etymology: Middle English walnot, from Old English wealhhnutu, literally, foreign nut, from Wealh Welshman, foreigner + hnutu nut — more at welsh , nut
1.
a. : an edible nut produced by a tree of the genus Juglans ; especially : english walnut 2
b. or walnut tree
[Middle English walnotetre, walnot tree ]
: a tree bearing this nut — see tree illustration
c. : the wood of a walnut tree ; especially : black walnut
2. : any of several trees of genera other than Juglans: as
a. : acapu
b. : african walnut
c. : black poison
3. chiefly New England : hickory nut
4. : a moderate reddish brown that is the color of the heartwood of the black walnut — distinguished from walnut brown