'Matweed' definitions:

Definition of 'Matweed'

From: GCIDE

Matweed \Mat"weed`\, n. (Bot.) 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. [1913 Webster]