grass

noun

1. any of various plants of the grass family that are usually used for food, fodder, or grazing and as lawns
2. any grasslike plant of various families having similar uses
3. ground covered with grass; pasture land or lawn
4. horizontal lines of clutter on a radarscope caused by electronic noise signals
5. ☆ Slang marijuana
6. Brit., Slang an informer; stool pigeon

adjective

transitive verb

1. to put (an animal or animals) out to pasture or graze
2. to grow grass over; cover with grass
3. to lay (textiles, etc.) on the grass for bleaching by the sun
4. Brit., Slang to inform against, as to the police

intransitive verb

1. to become covered with grass
2. Brit., Slang to act as an informer; inform (on)