Fit, we hear, for a drop of the hard stuff? (4)
I believe the answer is:
Here is my best explanation:
'a drop of the hard stuff?' is the definition.
'fit we hear' is the subsidiary indication.
'fit' becomes 'hale' (both can mean healthy).
'we hear' shows a homophone (sound like).
'hale' sounds like 'hail'.
'for' is the link.
(Other definitions for hail that I've seen before include "Welcome - sort of shower", "Precipitating ice pellets", "Shower of ice pellets", "Greet - precipitation", "Frozen rain; call taxi", "Greeting - falling stones", "Ave - it's frozen rain", "Wintry weather", "Call from a distance" and "Frozen rain; acclaim".)