Irritates some files (5)
I believe the answer is:
rasps
This clue is a double definition.
'irritates' is the first definition.
(I've seen this in another clue)
'some files' is the second definition.
(rasp is a kind of file)
(Other definitions for rasps that I've seen before include "Coarse files" , "Scrapes" , "Jars" , "fruit briefly" , "speaks hoarsely" .)