grass

1 : herbage suitable or used for grazing animals

2 : any of a large family (Gramineae synonym Poaceae) of monocotyledonous mostly herbaceous plants with jointed stems, slender sheathing leaves, and flowers borne in spikelets of bracts

3 : land (such as a lawn or a turf racetrack) covered with growing grass keep off the grass the horse had never won on grass

4 grasses plural : leaves or plants of grass

5 : a state or place of retirement put out to grass

6 [ short for grasshopper, rhyming slang for copper ] slang, British : a police informer

7 : electronic noise on a radarscope that takes the form of vertical lines resembling lawn grass

8 : marijuana

1 : to feed (livestock) on grass sometimes without grain or other concentrates

2 : to cover with grass especially : to seed to grass

1 : to produce grass

2 slang, British : inform sense 1 —often used with on