hazel /ˈheɪzəl/noun 5adjective 1forms 5 noun5 •A tree or shrub of the genus Corylus, bearing edible nuts called hazelnuts or filberts.The green turf was velvet underfoot. The blackbirds fluted in the hazels there. — 1895 •A greenish-brown colour, the colour of a ripe hazelnut. •The nut of the hazel tree. •The wood of a hazelnut tree. •Freestone. adjective1 •Of a greenish-brown colour. (often used to refer to eye colour)As she grew up and her hazel eyes became hazeler and her dark hair darker and her white skin whiter, and her form a sigh on every boy’s lips, she concentrated on one dream. — 1956 formshazels · hazeler · more hazel · hazelest · most hazel