Earth, for example (6)
I believe the answer is:
planet
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">earth for example</span>' is the definition.<br/ ><span class="explanation-format__explanation">(Earth is an example)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for planet that I've seen before include "Earth, for example" , "massive revolver" , "Heavenly (or earthly!) body" , "body in orbit" , "Orbiting body in the heavens" .)