an Old World plant, Cirsium arvense, having small purple or white flower heads, now a troublesome weed in North America.
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Question 1 of 9
You may have read the word "simmer" in a recipe or two, but what does it really mean?
Origin of Canada thistle
An Americanism dating back to 1790–1800
Words nearby Canada thistle
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
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