matweed

noun

1. A name of several maritime grasses, as the sea sand-reed (<i>Ammophila arundinacea</i>) which is used in Holland to bind the sand of the seacoast dikes (see <i>Beach grass</i>, under <u>Beach</u>); also, the <i>Lygeum Spartum</i>, a Mediterranean grass of similar habit.

   noun

   Source: webster1913