Girl's name; goddess (5)
I believe the answer is:
diana
This clue is a double definition.
'girl's name' is the first definition.
(I've seen this before)
'goddess' is the second definition.
(Roman goddess)
(Other definitions for diana that I've seen before include "Roman goddess of the moon and hunting" , "Roman goddess of the moon and the hunt" , "MONKEY" , "Roman goddess equating to Artemis" , "Girl" .)