Unruly inn cited for disturbance (8)
I believe the answer is:
incident
'for disturbance' is the definition.
(incident is a kind of disturbance)
'unruly inn cited' is the wordplay.
'unruly' indicates anagramming the letters.
'inn'+'cited'='inncited'
'inncited' with letters rearranged gives 'INCIDENT'.
(Other definitions for incident that I've seen before include "Minor event or occurrence" , "Event, occurence" , "Public disturbance" , "Mishap - occurrence" , "Confrontation" .)