Wordnet 3.0
NOUN (1)
1. 
 among the largest bony fish; 
 pelagic fish having an oval compressed body with high dorsal and anal fins and caudal fin reduced to a rudder-like lobe; 
 worldwide in warm waters; 
[syn: ocean sunfish, sunfish, mola, headfish]
WordNet (r) 3.0 (2006):
ocean sunfish
    n 1: among the largest bony fish; pelagic fish having an oval
         compressed body with high dorsal and anal fins and caudal
         fin reduced to a rudder-like lobe; worldwide in warm waters
         [syn: ocean sunfish, sunfish, mola, headfish]