Grass

In popular language grass means a short, green, ground covering or lawn, usually, but not necessarily comprised of a "true grass" or grasses, called turf. See also pasture, grassland.
In botany, grass refers to plants of the family Poaceae. These are the true grasses.
Plants with "grass" in their names that are not true grasses include:
- China grass, more commonly known as Ramie (Boehmeria nivea), a nettle grown for bast fibres, in the Family Urticaceae
- Ditch grass or Wigeon grass (Ruppia maritima) in the family Ruppiaceae
- Fish grass (Cabomba caroliniana)
- Goosegrass (Galium aparine)
- Mondo grass or lily turf (Ophiopogon japonicus), an Asian ornamental ground cover
- Nutgrass, a common lawn pest (Cyperus rotundus) in the Family Cyperaceae
- Pepper grasses (Lipidium spp.) in the family Brassicaceae
- Sawgrass, abundant in sub-tropical marshlands (Cladium spp.) in the Family Cyperaceae
- Scurvy-grass (Cochlearia species) in the family Brassicaceae
- Scurvy-grass Sorrel (Oxalis enneaphylla) in the Family Oxalidaceae
- Seagrasses, including Eel grass (Zostera spp.)
- "Sleeping grass" (Mimosa pudica) a legume (Family Fabaceae) and lawn pest
- Xyridaceae, known as the yellow-eyed grass family
Grass is slang for marijuana or for a criminal who informs on his accomplices.
GRASS for "GRAphics Symbiosis System" is a computer programming language
GRASS GIS (Geographic Resources Analysis Support System) is an Open source geographic information system.

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Grass

See also: Grass, Boehmeria, Botany, Brassicaceae, Cyperaceae, Cyperus, Eel grass, Fabaceae, Fiber