add. ·noun pistachio green.
2. pistachio ·add. ·noun the flavor of the pistachio nut, or an ice or confection flavored with it.
3. pistachio ·add. ·noun the small anacardiaceous tree, of southern europe and asia minor, which bears the pistachio nut.
4. pistachio ·noun 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.