Mostly female animals (5)
I believe the answer is:
sheep
This clue could be a double definition.
'mostly female' is the first definition.
The answer and definition can be both animals as well as being singular nouns.
Perhaps you can see an association between them that I can't see?
'animals' is the second definition.
(I have seen 'Woolly animals ' mean 'sheep' so perhaps 'animals' could also mean 'sheep')
Can you help me to learn more?
(Other definitions for sheep that I've seen before include "Timid followers" , "Cotswolds?" , "Farm animals" , "- may safely graze (Bach)" , "Members of congregation" .)