Jar for a kind of berry (4)
I believe the answer is:
rasp
This clue is a double definition.
'jar' is the first definition.
(make unpleasant sound)
'kind of berry' is the second definition.
(I've seen this in another clue)
'for a' is the link.
(Other definitions for rasp that I've seen before include "sort of berry?" , "fruit" , "Grate; scrape" , "Coarse file or grating sound" , "File - berry" .)