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
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