cheat grass
noun
mass noun
1- chiefly N. Amer. a tough wild grass of open land, sometimes growing as a weed among cereal crops and in pasture〈主北美〉雀麦。
1.1
- Genus Bromus, family Gramineae: several species, in particular B. tectorum.雀麦属, 禾本科：数种, 尤指早雀麦。
词源
late 18th cent.: a local word for various wild plants， perhaps from their resemblance to the cereals among which they grew.