A head for drink? (6)
I believe the answer is:
noggin
I believe this is a double definition.
'a head' is the first definition.
(noggin is a kind of head)
'drink?' is the second definition.
(drink measurement, typically a quarter of a pint)
'for' is the link.
(Other definitions for noggin that I've seen before include "Gill usually" , "Head - tot" , "Small quantity of spirits" , "alcoholic drink?" , "Measure of alcohol, about a quarter pint" .)