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Meaning of bitterweed

bit•ter•weed

Pronunciation: (bit'ur-wēd"), [key]
— n.
  1. any of various plants containing a bitter principle, as those of the genus Picris.
  2. a sneezeweed, Helenium amarum.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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