ha·zel 
(hāzəl)
(hāzəl)n.
1. Any of various shrubs or small trees of the genus Corylus that bear edible nuts enclosed in a leafy husk, especially the American species C. americana or the widely cultivated Eurasian species C. avellana. Also called filbert, hazelnut.
2. A light brown or yellowish brown.
[Middle English hasel, from Old English hæsel.]
hazel adj.