Quarrel, dust-up (3)
I believe the answer is:
row
I believe this is a double definition.
'quarrel' is the first definition.
(synonyms)
'dust-up' is the second definition.
(I've seen this in another clue)
(Other definitions for row that I've seen before include "Propel a boat with the tier" , "falling out" , "Difference" , "Angry dispute" , "Fight in a queue?" .)