Mythological maiden (5)
I believe the answer is:
nymph
'mythological maiden' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for nymph that I've seen before include "Beauty -- young larva" , "Immature insect; spirit" , "Beautiful female" , "Mythical spirit maiden; dragonfly life stage" , "Echo, perhaps" .)