Lovers' clash (4)
I believe the answer is:
spat
'lovers' clash' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for spat that I've seen before include "Unimportant quarrel between Pats" , "Pat's involved in squabble" , "Trivial quarrel" , "Observed" , "Short gaiter or slight quarrel (4)" .)