Drink scotch (6)
I believe the answer is:
squash
I believe this clue is a double definition.
'drink' is the first definition.
(I've seen this before)
'scotch' is the second definition.
(I've seen this before)
(Other definitions for squash that I've seen before include "Orange drink" , "Racquet sport" , "Vegetable, drink and ball game" , "Game - people closely packed" , "Squeeze; vegetable" .)