(informal) A hidden enemy.

Alternative form of witchgrass

A kind of grass, Erianthus saccharoides, now Bothriochloa saccharoides), with the spikelets arranged in great silky plumes, growing in swamps in the Southern United States.

any of several bent grasses, of the genus Agrostis, that occur in cool, humid areas of the United States.

Any of several grasses, of the genus Agrostis, native to temperate climates; grown for pasture, turf and for putting greens and golf courses.

Bouteloua dactyloides. / Hierochloe odorata (syn. Anthoxanthum nitens), sweetgrass. / Anthoxanthum odoratum, sweet vernal grass, vanilla grass. / Stenotaphrum secundatum, Saint Augustine grass.

Downy brome; drooping brome (Bromus tectorum); an annual grass native to Europe, southwestern Asia and northern Africa.

A tennis court with a grass surface.

seawrack, especially eelgrass (Zostera marina) / tasselweed, widgeonweed (Ruppia spp.), of fresh water

clover (of genus Trifolium) / Halophila baillonis, a rare seagrass.