medick(n = noun.plant) medic, trefoil - any of several Old World herbs of the genus Medicago having small flowers and trifoliate compound leaves;
is a kind of herb, herbaceous plant
is a member of genus medicago, medicago
has particulars: medicago arborea, moon trefoil, medicago falcata, sickle alfalfa, sickle lucerne, sickle medick, calvary clover, medicago echinus, medicago intertexta, black medick, hop clover, medicago lupulina, nonesuch clover, yellow trefoil, alfalfa, lucerne, medicago sativa

   Any of several Old World herbs of the genus Medicago having small flowers and trifoliate compound leaves. [WordNet 1.5]

medick, n. (also medic) any leguminous plant of the genus Medicago, esp. alfalfa.

Etymology:
ME f. L medica f. Gk Medike poa Median grass

black medick, sickle medick