n. 1 a any of a group of wild plants with green blades that are eaten by ruminants. b plant of the family which includes cereals, reeds, and bamboos. 2 pasture land. 3 grasscovered ground, lawn. 4 grazing (out to grass). 5 slang marijuana. 6 slang informer. v. 1 cover with turf. 2 US provide with pasture. 3 slang a betray, esp. to the police. b inform the police. (7 grassy adj. (ier, lest). [Old English] grasshopper n. jumping and chirping insect.