Drinks finally sozzling girls (7)
I believe the answer is:
glasses
'drinks' is the definition.
(I've seen this before)
'finally sozzling girls' is the wordplay.
'finally' says to take the final letters.
'girls' becomes 'lasses' (lass can informally mean a girl).
The final letter of 'sozzling' is 'g'.
'g'+'lasses'='GLASSES'
(Other definitions for glasses that I've seen before include "Spectacles; tumblers" , "Specs" , "are they full of alcohol?" , "Spectacles or drinking containers" , "They make girls unattractive to Parker" .)