Artificial intelligent assistant

three-stringed

ˈthree-stringed, a.
  (-strɪŋd)
  Having three strings: usually of a musical instrument.

1599 Sandys Europæ Spec. (1632) 145 The whole Realme..hath beene scourged with a three stringed whip, Warre, Ill-governement, and Injustice. 1611 Bible 1 Sam. xviii. 6 margin, Three stringed instruments. 1752 Newton Note Milton's L'Allegro 94 Rebeck is a three-stringed fiddle. 1843 Penny Cycl. XXVI. 346/1 Medals..representing Apollo playing on a three-stringed instrument.

Oxford English Dictionary

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