Pinch a little bit of booze (3)
I believe the answer is:
nip
I believe this is a double definition.
'pinch' is the first definition.
('nip' can be a synonym of 'pinch')
'a little bit of booze' is the second definition.
(small amount of spirits)
(Other definitions for nip that I've seen before include "Pinch; quantity of spirits" , "Pinch using pin" , "Light bite" , "Swift bite" , "Pinch sharply, perhaps in the bud" .)