Source : Webster's Revised Unabridged Dictionary (1913)

Dyer \Dy"er\, n.
   One whose occupation is to dye cloth and the like.

   {Dyer's broom}, {Dyer's rocket}, {Dyer's weed}. See {Dyer's
      broom}, under {Broom}.

Source : WordNet®

dyer's weed
     n : eastern North American herb whose yellow flowers are (or
         were) used in dyeing [syn: {Solidago rugosa}]