knotgrass
noun
knot·grass
ˈnät-ˌgras 
1
: a cosmopolitan prostrate weed (Polygonum aviculare) of the buckwheat family with jointed stems, prominent sheathing stipules, and minute flowers
broadly
: any of several congeneric plants
2
: any of several grasses (such as Paspalum distichum) with markedly jointed stems
Examples of knotgrass in a Sentence
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This Series should play on a field of gout-wort, grommel and knotgrass.
—
John Hyduk, New York Times, 24 Oct. 2016
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John Hyduk, New York Times, 24 Oct. 2016
Cite this Entry
“Knotgrass.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/knotgrass. Accessed 13 Jul. 2025.
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