Artificial intelligent assistant

mastin

† ˈmastin Obs. rare.
  [a. OF. mastin: see mastiff.]
  = mastiff n.

1483 Caxton G. de la Tour H vij, Beholde these grete dogges that men call mastyns. 1485 ― Chas. Gt. 128 But rolland..came vpon the mastyn sarasyns.

Oxford English Dictionary

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