1. 草；青草Grass is a very common plant consisting of large numbers of thin, spiky, green leaves that cover the surface of the ground.
2. 草地；草坪；草场If you talk about the grass, you are referring to an area of ground that is covered with grass, for example in your garden.
3. 同marijuanaGrass is the same as marijuana .
4. （向警方等）揭发，告发If you say that one person grasses on another, the first person tells the police or other authorities about something criminal or wrong which the second person has done.
5. 告密者；揭发者A grass is someone who tells the police or other authorities about criminal activities that they know about.
6. 草是那边绿；这山望着那山高If you say the grass is greener somewhere else, you mean that other people's situations always seem better or more attractive than your own, but may not really be so.
7. （因年老等）被辞退，遭解雇If you say that someone is being put out to grass, you mean they are no longer being employed because they are considered to be too old or no longer useful.
in AM, usually use 美国英语通常用 put out to pasture