Disturbance or quarrel (7)
I believe the answer is:
ruction
I believe this is a double definition.
'disturbance' is the first definition.
(ruction is a kind of disturbance)
'quarrel' is the second definition.
(thesaurus)
(Other definitions for ruction that I've seen before include "Disturbance, quarrel" , "Find a disturbance in cut iron" , "Uproar" , "Racket" , "Noisy disturbance" .)