Artificial intelligent assistant

rere-band

rere-ban(d
  [a. OF. rereban (Wace, etc.).]
  obs. var. arrière-ban.

13.. Guy Warw. (A.) 3685 Þi rereban þou do of-sende; To awreke [þe] þou haue in mende. 1523 [see arrière-ban]. a 1533 Ld. Berners Huon ciii. 341 Then he sent for his rerebande, as farre as his empyre stretched.

Oxford English Dictionary

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