MATWEED
Etymology
Noun
matweed (plural matweeds)
Any of several maritime grasses.
Guilleminea spp.
Nardus stricta
Axonopus fissifolius (common carpetgrass)
Amaranthus blitoides (prostate amaranth, mat amaranth)
Synonyms
• (Axonopus fissifolius): common carpetgrass, caratao grass, Louisiana grass (US); mat grass, narrow-leaved carpet grass, Durringtion grass (Australia)
Source: Wiktionary
Mat"weed`, n. (Bot.)
Definition: A name of several maritime grasses, as the sea sand-reed
(Ammophila arundinacea) which is used in Holland to bind the sand of
the seacoast dikes (see Beach grass, under Beach); also, the Lygeum
Spartum, a Mediterranean grass of similar habit.
Source: Webster’s Unabridged Dictionary 1913 Edition