Plumlike gin flavoring (4)
I believe the answer is:
sloe
'plumlike gin flavoring' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for sloe that I've seen before include "Black fruit" , "Thorny bush with plum-like fruit" , "Blackthorn, used in making a type of gin" , "Fruit steeped in gin to make a liqueur" , "Fruit of the blackthorn does't sound fast" .)