grass

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A member of the grass family.
• noun The members of the grass family considered as a group.
• noun Any of various plants having slender leaves similar to those of a grass.
• noun An expanse of ground, such as a lawn, covered with grass or similar plants.
• noun Grazing land; pasture.
• noun Slang Marijuana.
• noun Electronics Small variations in amplitude of an oscilloscope display caused by electrical noise.
• noun Chiefly British Slang An informer.
• intransitive verb To cover with grass.
• intransitive verb To grow grass on.
• intransitive verb To feed (livestock) with grass.
• intransitive verb To become covered with grass.
• intransitive verb To graze.

from The Century Dictionary.

• To cover with grass or with turf; furnish with grass: as, to grass a lawn.
• To throw on or bring down to the grass or ground, as a bird shot on the wing, or a fish caught from the water.
• To lose in the grass.
• To feed with growing grass; pasture.
• To breed grass; be covered with grass.
• In printing, to discharge (a workman).
• In printing, to seek or give temporary employment.
• noun In printing, temporary employment.
• noun The esparto, Stipa tenacissima.
• noun See blear-grass, 2.
• noun In the northwesern United States, Xerophyllum tenax. Its very slender and tough leaves, 2 or 3 feet long, were used by the Indians in making water-tight baskets. This is the bear-grass of Lewis and Clark. Also called squaw-grass and squaw-lily, and, in Idaho, pine-lily. See Xerophyllum.
• noun Same as Texas millet.
• noun The freshwater cord-grass, Spartina cynosuroides
• noun The wire-grass or yard-grass, Eleusine Indica.
• noun See St. Augustine grass.
• noun A brown-sedge a foot or two high, Andropogon scoparius, valued for grazing in the mountains of the southern United States. In the West (where it is called little blue-stem) it is less valued than the former for hay.
• noun Same as guinea-grass.
• noun In general, herbage; the plants on which cattle and other beasts feed or pasture; the verdurous covering of the soil.
• noun Specifically In botany, any plant of the order Gramineœ (which see).
• noun plural Stalks or sprays of grass: as, the fireplace was filled with dried grasses.
• noun Asparagus.
• noun In mining, the surface of the ground at the mine.
• noun In turf parlance, the time of new verdure; spring or summer: as, the colt will be three this grass.
• noun See to take heart of grace, under grace.
• noun The Eleusine Indica. See Eleusine.
• noun Bermuda grass, Cynodon Dactylon.
• noun In Queensland, the Chloris divaricata.
• noun To go into retirement; rusticate: commonly used in the imperative, with the contemptuous force of “Get out!'
• noun To die; go to the grave.
• noun To fall violently; be knocked down, as a pugilist in the ring: as, he tripped and went to grass.
• noun In mining, to the surface: as, send the ore to grass.

from the GNU version of the Collaborative International Dictionary of English.

• intransitive verb rare To produce grass.
• transitive verb To cover with grass or with turf.
• transitive verb To expose, as flax, on the grass for bleaching, etc.
• transitive verb colloq. To bring to the grass or ground; to land.