(ש"ע) עשב אחו המצוי בצפון ודרום אמריקה

n. grass of western North America and South America used as pasturage (also gramma)

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nf. grass, green plant with flat leaves and jointed stems (used as a ground cover in lawns, fields, etc.)

n. grass, lawn; gramme, gram

v. grass; hackle

(n.) = twitch grass ; couch grass.
Ex: If your garden is not very big, practically the only way to eradicate twitch grass is to cover the whole area with a light-excluding cover.
Ex: We are fully aware that the quickest and easiest way to clear an area of couch grass is to strim the grass to a height of about 2cm .