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knotweed

 - 2 dictionary results

knot⋅weed

[not-weed]
–noun
any of several knotty-stemmed plants belonging to the genus Polygonum, of the buckwheat family.

Origin:
1570–80; knot 1 + weed 1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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knot·weed   (nŏt'wēd')   
n.  Any of several plants of the genus Polygonum, with jointed stems and inconspicuous flowers.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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