n. - The nut of the Pistacia vera, a tree of the order Anacardiaceae, 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.
n. - The small anacardiaceous tree, of southern Europe and Asia Minor, which bears the pistachio nut.
n. - The flavor of the pistachio nut, or an ice or confection flavored with it.
n. - Pistachio green.