a hard-shelled seed consisting of an edible kernel or meat enclosed in a woody or leathery shell

a member of the flavonoid class of polyphenolic compounds, with antioxidant properties; it can be found in vegetables, fruits, nuts, berries, tea, and red wine.

any of various trees of the genus Juglans

American walnut having a very hard and thick woody shell

nut with a wrinkled two-lobed seed and hard but relatively thin shell; widely used in cooking

any of various trees of the genus Juglans