Gin-flavoring fruit
I believe the answer is:
sloe
'gin-flavoring fruit' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for sloe that I've seen before include "Fruit of the blackthorn does't sound fast" , "Thorny bush with plum-like fruit" , "Musical study" , "Black fruit" , "Sour blackthorn fruit" .)