from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A biennial Eurasian thistle (Cirsium vulgare) in the composite family, naturalized in North America and having heads of purplish flowers and spiny stems and leaves.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Spear thistle.

from the GNU version of the Collaborative International Dictionary of English

  • n. Cnicus lanceolatus, the common large thistle of neglected pastures.

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

  • n. European thistle with rather large heads and prickly leaves; extensively naturalized as a weed in the United States


From its large head.
(American Heritage® Dictionary of the English Language, Fourth Edition)


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