Emily Dickinson Lexicon

PIS-TA'CHID, n. [Fr. pistache; It. pistacchio; L. pistachia; Gr. πιστακια; Pers. فُسْتُقْ; Ar. فُسْتَقٌ fostakon.]

The nut of the Pistacia terebinthus or turpentine-tree, containing a kernel of a pale greenish color, of a pleasant taste, resembling that of the almond, and yielding a well tasted oil. It is wholesome and nutritive. The tree grows in Syria, Arabia and Persia. – Encyc.