Earth or Venus (6)
I believe the answer is:
planet
This clue is a double definition.
'earth' is the first definition.
(Earth is an example)
'venus' is the second definition.
(thesaurus)
(Other definitions for planet that I've seen before include "World" , "Earth, for instance" , "Heavenly (or earthly!) body" , "Large body orbiting sun" , "Jupiter is one" .)