- hazelnut, hazel, hazelnut tree - any of several shrubs or small trees of the genus Corylus bearing edible nuts enclosed in a leafy husk
--1 is a kind of nut tree
--1 is a member of Corylus, genus Corylus
--1 has parts: hazelnut, filbert, cobnut, cob
--1 has substances: hazel
--1 has particulars:American hazel, Corylus americana; cobnut, filbert, Corylus avellana, Corylus avellana grandis; beaked hazelnut, Corylus cornuta