Dictionary.com

Canada thistle

noun

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

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Origin of Canada thistle

An Americanism dating back to 1790–1800

Words nearby Canada thistle

Canada lily, Canada lynx, Canada mayflower, Canada moonseed, Canadarm, Canada thistle, Canadian, Canadian Alliance, Canadian bacon, Canadian Broadcasting Corporation, Canadian English
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for Canada thistle

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

    Seed Dispersal|William J. Beal

British Dictionary definitions for Canada thistle

Canada thistle

noun

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