1. (noun)medic, medick, trefoil any of several Old World herbs of the genus Medicago having small flowers and trifoliate compound leaves Synonyms: medic, trefoil, medick, medicalofficer, clover
2. (noun)clover, trefoil a plant of the genus Trifolium Synonyms: medic, trefoil, medick, clover
3. (noun)trefoil an architectural ornament in the form of three arcs arranged in a circle Synonyms: medic, medick, clover