English

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Etymology

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From knot +‎ grass.

Noun

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English Wikipedia has an article on:
Wikipedia

knotgrass (countable and uncountable, plural knotgrasses)

  1. An annual plant, Polygonum aviculare, found in fields and wasteland
    Synonym: centinode
  2. Paspalum distichum, a weedy perennial grass of wet areas
    Synonym: water couch

Derived terms

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Translations

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