Ask hoarsely for file (4)
I believe the answer is:
rasp
'for file' is the definition.
(rasp is a kind of file)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for rasp that I've seen before include "Make a grating noise" , "fruit" , "sort of berry?" , "Grating noise; file" , "File - berry" .)