knot·​grass ˈnät-ˌgras How to pronounce knotgrass (audio)
: 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
: any of several grasses (such as Paspalum distichum) with markedly jointed stems

Examples of knotgrass in a Sentence

Recent Examples on the Web This Series should play on a field of gout-wort, grommel and knotgrass. John Hyduk, New York Times, 24 Oct. 2016

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'knotgrass.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1538, in the meaning defined at sense 1

Time Traveler
The first known use of knotgrass was in 1538

Dictionary Entries Near knotgrass

Cite this Entry

“Knotgrass.” Dictionary, Merriam-Webster, Accessed 1 Oct. 2023.

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