Dictionary.com

knotweed

[ not-weed ]
/ ˈnɒtˌwid /

noun

any of several knotty-stemmed plants belonging to the genus Polygonum, of the buckwheat family.

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characterized by cleverness or originality of invention or construction.
carried on abroad, or with other countries.
relating to or being a people who are the original, earliest known inhabitants of a region, or are their descendants.
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Origin of knotweed

First recorded in 1570–80; knot1 + weed1

Words nearby knotweed

knot stitch, knotted, knotter, knotting, knotty, knotweed, knotwork, knout, know, knowable, know-all
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for knotweed

  • Japanese knotweed, for all its invasive attributes, was an ornamental plant for the Victorians.

    The Best of Brit Lit|Peter Stothard|December 17, 2010|DAILY BEAST

  • Those of us who are gardeners will certainly agree that “unfortraedde” is the right name for knotweed.

    The Old English Herbals|Eleanour Sinclair Rohde

  • It is Polygonum Virginicum, and so far without a common name, unless Virginia knotweed be satisfactory.

    Seed Dispersal|William J. Beal

British Dictionary definitions for knotweed

knotweed
/ (ˈnɒtˌwiːd) /

noun

any of several polygonaceous plants of the genus Polygonum, having small flowers and jointed stems
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