From Olympia the nature goddess (6)
I believe the answer is:
athena
'goddess' is the definition.
(I know that Athena is a goddess)
'from olympia the nature' is the wordplay.
'from' indicates the answer is hidden within the clue.
'ATHENA' is hidden within 'olympia the nature'.
(Other definitions for athena that I've seen before include "Greek goddess of wisdom etc." , "Greek goddess of a capital city" , "One-time goddess" , "wise but fierce goddess" .)