Hazel . ( Of hazelnut ). 1. m. shrub in the family of the Betuláceas, of three to four meters in height, well populated of stems, leaves broad, heart-shaped at the base, petiolate and sawn by the margin, male and female flowers on the same or in different branches, and whose fruit is the hazelnut. 2. m. wood of this tree, tough and leathery, often used for rings of pipes and barrels. 3. m. tree from the island of Cuba, of the family of the Euforbiáceas, tender, viscous, white wood, alternate leaves and flowers greenish and odourless, five petals. Its fruit is a Berry of three cavities with two almonds blan CAs, of something similar to the hazelnut flavor. The juice of its trunk builds rubber band.