Zeus or Vishnu, eg (3)
I believe the answer is:
god
This clue is a double definition.
'zeus' is the first definition.
(thesaurus)
'vishnu eg' is the second definition.
(vishnu is a kind of god)
(Other definitions for god that I've seen before include "Eg, Quetzalcoatl" , "Pluto" , "Deity" , "Supreme being" , "Superhuman being" .)