Artificial intelligent assistant

mill-race

ˈmill-race
  [f. mill n.1 + race n.]
  The current of water that drives a mill-wheel; the channel in which the water runs to the mill.

1478–9 Durham Acc. Rolls (Surtees) 647 Operantibus in muracione murorum et posicione del Milnrasses et le bay ejusdem molendini. 1536–7 Ibid. 702 Le mylnerasse de Scaltok. 1822 T. Bewick Mem. 49 Others were digging a mill-race of about a quarter of a mile in length. 1874 Green Short Hist. ii. §7. 100 To rescue his hawk..he once plunged into a millrace, and was all but crushed by the wheel.

Oxford English Dictionary

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