Artificial intelligent assistant

biga

biga Rom. Antiq.
  (ˈbaɪgə)
  [L.; later form of bīgæ, contr. from bijugæ, f. bi- two + jug-um yoke, collar.]
  A two-horsed chariot.

1850 J. Leitch Müller's Anc. Art §245. 253 A biga, the king therein. 1857 Birch Anc. Pottery (1858) II. 202 A man standing in a biga.

Oxford English Dictionary

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