Fruity gin cocktail ingredient (4)

I believe the answer is:

sloe

(Other definitions for sloe that I've seen before include "Sour blue-black fruit" , "Wild plum" , "Black fruit" , "Blackthorn, used in making a type of gin" , "Musical study" .)

I've seen this clue in the Universal.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.