Stop for something to drink (6)
I believe the answer is:
scotch
'stop' is the definition.
(I've seen this before)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for scotch that I've seen before include "See 1" , "Put an end to - in Caledonia?" , "Put the lid on" , "Decisively put an end to" , "A drink; crush" .)