Artificial intelligent assistant

cross-post

ˈcross-post Obs.
  [cross- 5.]
  The post which carried letters on cross-country routes.

[1720 Lond. Gaz. 16 Apr., General Post-Office, London, April 12, 1720..His Majesty's Attorney-General, having granted to Ralph Allen..a Farm of all the Bye-Way or Cross-Road Letters throughout England.] 1750 Coventry Pompey Litt. ii. iii. (1785) 52/1 All the tramantanes that come by the cross-post. 1880 L. Stephen Pope 146 Allen, who had made a large fortune by farming the cross⁓posts.

Oxford English Dictionary

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