Chop into tiny bits (5)
I believe the answer is:
mince
'chop into tiny bits' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for mince that I've seen before include "Ground meat - walk affectedly" , "meat that's prepared" , "Finely chopped meat" , "Chop food into small bits" , "Cut meat into small pieces, or walk affectedly" .)