Jamaican fruit (4)
I believe the answer is:
ugli
'jamaican fruit' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for ugli that I've seen before include "Hybrid fruit, sounds nasty" , "Hybrid of tangerine and grapefruit" , "Black/violet element" , "Jamaican form of 6" , "Large juicy fruit with thick wrinkled skin" .)