Female flier? (4)
I believe the answer is:
bird
This clue is a double definition.
'female' is the first definition.
(bird is a kind of female)
'flier?' is the second definition.
(synonyms)
(Other definitions for bird that I've seen before include "Flier - spell in prison" , "Feathered creature" , "Nest builder?" , "Avian" , "Feathered flyer" .)