knotweed

Variant of knotgrass

knotgrass definition

knot·grass (nät′gras′)

noun

  1. any of several weedy plants (genus Polygonum) of the buckwheat family; esp., a common weed (P. aviculare) with slender stems, narrow leaves, and small axillary flowers
    often called knotweed knot′·weed′ (-wēd′)
  2. ☆ a creeping grass (Paspalum distichum) growing in wet places in the S U.S.

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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