DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   macula
       n 1: a cooler darker spot appearing periodically on the sun's
            photosphere; associated with a strong magnetic field [syn:
            sunspot, macula]
       2: a small yellowish central area of the retina that is rich in
          cones and that mediates clear detailed vision [syn: macula,
          macula lutea, macular area, yellow spot]
       3: a patch of skin that is discolored but not usually elevated;
          caused by various diseases [syn: macule, macula]