[Cf. RACE sb.1 8 c.] The part of a mill-race below the wheel, the tail-water; = TAIL sb.1 4 f.
1776. C. Carroll, Jrnl. Miss. Canada, in B. Mayer, Mem. (1845), 54. The water ran through this passage about as swift as it does through your tail race.
1820. Aberdeen Jrnl., 2 Aug. (Jam. s.v. Hack), To put proper hecks on the tail-races of their canals.
1873. Act 36 & 37 Vict., c. 71 § 17. No person shall catch … any salmon … in the head race or tail race of any mill.
b. Mining. (See quot. 1881.)
1881. Raymond, Mining Gloss., Tail-race, the channel in which tailings, suspended in water, are conducted away.
1890. Melbourne Argus, 16 June, 6/2. A value of gold equal to the amount now saved was run into the tail-race and lost.
