a shrub or small tree of the genus corylus, as the c. avellana, bearing a nut containing a kernel of a mild, farinaceous taste; the filbert. the american species are c. americana, which produces the common hazelnut, and c. rostrata. see filbert.-a miner's name for freestone.-consisting of hazels, or of the wood of the hazel; pertaining to, or derived from, the hazel; as, a hazel wand.-of a light brown color, like the hazelnut.