The Collaborative International Dictionary of English v.0.48:

Medic \Med"ic\, n. [L. medica, Gr. ? (sc. ?) a kind of clover
   introduced from Media, from ? Median.] (Bot.)
   A leguminous plant of the genus Medicago. The black medic
   is the Medicago lupulina; the purple medic, or lucern, is
   Medicago sativa.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Medic \Med"ic\, n.
   A person who serves to provide medical care.
   [PJC]

   2. Specifically: (Mil.) A member of the medical corps in the
      military.
      [PJC]

   3. A medical doctor.
      [PJC]

   4. A medical student.
      [PJC]

The Collaborative International Dictionary of English v.0.48:

Medic \Med"ic\, a. [L. medicus.]
   Medical. [R.]
   [1913 Webster]

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):

medic
    n 1: any of several Old World herbs of the genus Medicago having
         small flowers and trifoliate compound leaves [syn: medic,
         medick, trefoil]
    2: a medical practitioner in the armed forces [syn: medical
       officer, medic]