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Canada thistle

noun

  1. an Old World plant, Cirsium arvense, having small purple or white flower heads, now a troublesome weed in North America.


Canada thistle

noun

  1. the US and Canadian name for creeping thistle
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


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Word History and Origins

Origin of Canada thistle1

An Americanism dating back to 1790–1800
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Example Sentences

Little bits of Canada-thistle root half an inch long may send forth buds, and each bud grow to be an independent plant.

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