Total hoot (4)
I believe the answer is:
riot
'total hoot' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for riot that I've seen before include "Disturbance of the peace by many" , "Ruckus, insurrection" , "The unruly may run this" , "Violent disturnance of the peace (by crowd)" , "Affray, fighting in the streets" .)