n.
or hazel(nut)
Any of about 15 species of deciduous trees and shrubs that make up the genus Corylus , in the birch family, native to the northern temperate zone; also, the edible nuts they produce.
Choice nuts are produced by two Eurasian trees, the European filbert ( C. avellana ) and the giant filbert ( C. maxima ), and by hybrids of these species. Some varieties are valuable hedgerow and ornamental trees. An oil from C. avellana is used in food products, perfumes, and soaps; the tree yields a soft, reddish-white timber that is useful for small articles such as tool handles and walking sticks.