Little fight (4)
I believe the answer is:
spat
'little fight' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for spat that I've seen before include "A small tiff or quarrel" , "Showed contempt" , "Taps in a small quarrel" , "Taps in minor quarrel" , "Spoke violently" .)