Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Any plant in the genus Ambrosia, especially Ambrosia artemisiifolia.
  • n. The plant Artemisia trifida.
  • n. The plant Helenium amarum.

from the GNU version of the Collaborative International Dictionary of English

  • n. A species of Ambrosia (Ambrosia artemisiæfolia); Roman worm wood.

from The Century Dictionary and Cyclopedia

  • n. A name given to American species of ragweed, Ambrosia artemisiæfolia and A. trifida.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. widespread European weed with spiny tongue-shaped leaves and yellow flowers; naturalized in United States
  • n. any of numerous chiefly North American weedy plants constituting the genus Ambrosia that produce highly allergenic pollen responsible for much hay fever and asthma

Etymologies

bitter +‎ weed (Wiktionary)

Examples

  • hundreds of thousands of wisconsin union membership residents would be happy to donate. where would you like the checks sent? bitterweed wrote:

    Reuters: Press Release

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