noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   An annual plant, Polygonum aviculare, found in fields and wasteland countable, uncountable
2. 2
   low-growing weedy grass with spikelets along the leaf stems wordnet
3. 3
   Paspalum distichum, a weedy perennial grass of wet areas countable, uncountable

Synonyms

All synonyms

centinodepaspalum distichumwater couch

Etymology

From knot + grass.

Related phrases

common knotgrassmountain knotgrasspolygonum aviculare

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.