Prohibition drinking place! (3)
I believe the answer is:
bar
This clue is a double definition.
'prohibition' is the first definition.
(thesaurus)
'drinking place' is the second definition.
(Other definitions for bar that I've seen before include "Support (for a drinker?)" , "Counter for serving drink" , "Prohibit; pressure unit" , "Public house" , "What drinkers head for" .)