'Tailrace' definitions:

Definition of 'tailrace'

(from WordNet)
noun
A watercourse that carries water away from a mill or water wheel or turbine

Definition of 'Tailrace'

From: GCIDE
  • Tailrace \Tail"race`\, n.
  • 1. See Race, n., 6. [1913 Webster]
  • 2. (Mining) The channel in which tailings, suspended in water, are conducted away. [1913 Webster]