Wordnet 3.0
NOUN (1)
1. 
 any of several Old World herbs of the genus Medicago having small flowers and trifoliate compound leaves; 
[syn: medic, medick, trefoil]
The Collaborative International Dictionary of English v.0.48:
medick \medick\ n.
   Any of several Old World herbs of the genus Medicago having
   small flowers and trifoliate compound leaves. [Also spelled
   medic.]
   Syn: trefoil.
        [WordNet 1.5]
WordNet (r) 3.0 (2006):
medick
    n 1: any of several Old World herbs of the genus Medicago having
         small flowers and trifoliate compound leaves [syn: medic,
         medick, trefoil]