Dictionary
Words, grammatical forms and meanings linked to the ontology.
water couch en · NOUN
Meanings
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(uncountable) Paspalum distichum, a weedy perennial grass of wet areas.
Where at one time might be seen waving fields of rye-grass, cocksfoot, and clovers, are now growing the unsightly and undesirable tussocks, and the low-lying fields are covered in many cases with what is commonly called water-couch or swamp grass.
1901 May 10, “Paspalum Dilatatum”, in The Agricultural Journal and Mining Record, volume 4, number 5, page 153:
Synonyms
knotgrass