Artist losing urge, knocked back wine (4)
I believe the answer is:
hock
'wine' is the definition.
(type of wine)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for hock that I've seen before include "Deposit with a pawnbroker" , "Dry wine; joint; pawn" , "Uncle's pledge" , "Rhine wine -- horse joint" , "German wine -- horse's back 'ankle'" .)