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Noun: cotton thistle
  1. Biennial Eurasian white hairy thistle having pale purple flowers; naturalized in North America
    - woolly thistle, Scotch thistle, Onopordum acanthium, Onopordon acanthium

Derived forms: cotton thistles

Type of: thistle

Part of: genus Onopordon, genus Onopordum, Onopordon, Onopordum

Encyclopedia: Cotton thistle