[ pɪ'stα:ʃɪəʊ , pɪ'statʃəʊ ]
■ noun ( plural ~s )
1》 the edible pale green seed of an Asian tree.
2》 the evergreen tree which produces ~s, with small brownish-green flowers and oval reddish fruit. [ Pistacia vera .]
Origin
ME pistace , from OFr., later influenced by Ital. pistaccio , via L. from Gk pistakion , from Old Pers.