Put down drink (6)
I believe the answer is:
squash
This clue is a double definition.
'put down' is the first definition.
(I've seen this before)
'drink' is the second definition.
(I've seen this before)
(Other definitions for squash that I've seen before include "behind glass" , "Crush or squeeze flat" , "Crush, squelch" , "Soft drink" , "Squeeze; vegetable" .)