(thing) by Segnbora-t Fri Jun 22 2001 at 21:35:52
From the A.Word.A.Day mailing list:
  1. verb transitive
    1. To set in order.
    2. To clear.
    (From Middle English redden, to clear, to put in order.)

  2. noun

    The spawning area or nest of a fish, especially a trout or a salmon.

    (Origin unknown.)

    "Stalking steelhead on shallow-water redds is a lesson in patience and accurate casting. A noisy footfall or the splash of hurried wading can spook these fish."
    Dave Richey, "Steelhead Gives Ride of Lifetime," The Detroit News, April 22, 2001.

I like it!