Bouquet for every female with only 50 per cent of volume (7)
I believe the answer is:
perfume
'bouquet' is the definition.
(perfume is a kind of bouquet)
'every female with only 50 per cent of volume' is the wordplay.
'every' becomes 'per' (I've seen this in other clues).
'female' becomes 'f' (abbreviation).
'with only 50 per cent of' suggests halving the letters.
'volume' cut in half is 'ume'.
'per'+'f'+'ume'='PERFUME'
'for' acts as a link.
(Other definitions for perfume that I've seen before include "Pleasant smell" , "sweet-smelling liquid" , "Fragrance, scent" , "What's pleasant-smelling" , "Aroma" .)