The nut of the Pistacia vera, a tree of the order Anacardiaceæ, containing a kernel of a pale greenish color, which has a pleasant taste, resembling that of the almond, and yields an oil of agreeable taste and odor; -- called also pistachio nut. It is wholesome and nutritive. The tree grows in Arabia, Persia, Syria, and Sicily.
- A deciduous tree (Pistacia vera) of central and western Asia, having pinnately compound leaves and dry, drupaceous, nutlike fruits.
- The nutlike fruit of this tree, having an edible, oily, green or yellow kernel.
- The flavor of these nuts.