Disclose what boozer often needs? (4)
I believe the answer is:
leak
I believe this clue is a double definition.
'disclose' is the first definition.
(I know this)
'what boozer often needs?' is the second definition.
(someone boozing might often need to take a leak)
(Other definitions for leak that I've seen before include "Let in water" , "Disclose unauthorised information" , "Accidental hole that allows fluid to escape" , "Disclose (secrets)" , "Seep; disclose" .)