Mass killing (7)
'mass killing' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for carnage that I've seen before include "Mass slaughter" , "The killing of many people, slaughter" , "Savage killing of people" , "Great slaughter" , "Bloody slaughter as in battle" .)
'mass killing' is the definition.
(I know that slaughter is a type of mass killing)
This is all the clue.
(Other definitions for slaughter that I've seen before include "Widespread killing" , "Kill cruelly" , "Butcher" , "Kill (animals) for food" , "Murder" .)