Definition of pistachio noun from the Oxford Advanced Learner's Dictionary

     

    pistachio

     noun
    noun
    BrE BrE//pɪˈstæʃiəʊ//
     
    ; NAmE NAmE//pɪˈstæʃioʊ//
     
    ; BrE BrE//ˈstɑːʃiəʊ//
     
    ; NAmE NAmE//pɪˈstɑːʃioʊ//
     
    (pl. pistachios)
     
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  1. 1 (also pistachio nut) [countable] the small green nut of an Asian tree
  2. 2 [uncountable] a pale green colour
  3. Word Origin late Middle English pistace, from Old French, superseded in the 16th cent. by forms from Italian pistaccio, via Latin from Greek pistakion, from Old Persian.
See the Oxford Advanced American Dictionary entry: pistachio