Search Result for "sunspot": 
Wordnet 3.0

NOUN (1)

1. a cooler darker spot appearing periodically on the sun's photosphere; associated with a strong magnetic field;
[syn: sunspot, macula]



WordNet (r) 3.0 (2006):

sunspot
    n 1: a cooler darker spot appearing periodically on the sun's
         photosphere; associated with a strong magnetic field [syn:
         sunspot, macula]