Dun, a.  Of a dark color; of a color partaking of a brown and black; of a dull brown color; swarthy.
     Summer's dun cloud comes thundering up.   -- Pierpont.
  Chill and dun
  Falls on the moor the brief November day.   --Keble.
  Dun crow Zool., the hooded crow; -- so called from its color; -- also called hoody, and hoddy.
  Dun diver Zool., the goosander or merganser.
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