[Middle English, from Old French (nois de) filbert, (nut of) Philbert, after Saint Philibert (died 684), whose feast day in late August coincides with the ripening of the nut.]
ha·zel (hā'zəl) n.
Any of various shrubs or small trees of the genus Corylus, especially the European species C. avellana or the American species C. americana, bearing edible nuts enclosed in a leafy husk. Also called filbert.
A hazelnut.
A light brown or yellowish brown.
[Middle English hasel, from Old English hæsel.] ha'zel adj.
ha·zel·nut (hā'zəl-nŭt') n. The edible nut of a hazel, having a hard smooth brown shell. Also called filbert.
"hazelnut," 1393, from Anglo-Norm. philber (1292), from Norman dialect noix de filbert, in allusion to St. Philbert, 7c. Frank. abbot, so called because the hazel nuts ripen near his feast day, Aug. 22.