noun
- any of various plants with a bitter taste, especially a North American plant of the aster family that is toxic to livestock
Usage: often used in plural; chiefly North American
Examples
- Ranchers must clear bitterweed from pastures to protect their cattle.
- The field was overgrown with bitterweed after the drought.
- Bitterweed spreads quickly in dry, disturbed soil.
- Livestock that eat bitterweed may become ill or lose weight.
- The yellow flowers of bitterweed bloom in late summer.