Part woman, part bird creature (5)
I believe the answer is:
harpy
'part woman part bird creature' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for harpy that I've seen before include "Bad-tempered woman" , "Greedy woman" , "Ravenous monster -- nagging woman" , "Rapacious woman-bird" , "Filthy beast" .)