knotgrass

English

Etymology

knot +‎ grass

Noun

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

Translations
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