Noun: yellow trefoil
- Prostrate European herb with small yellow flowers and curved black pods; naturalized in North America
"yellow trefoil often grows in lawns and pastures";
- black medick, hop clover, nonesuch clover, Medicago lupulina, hop trefoil [Brit]
Derived forms: yellow trefoils
Type of: medic, medick, trefoil
Encyclopedia: Yellow trefoil