Hostilities (3)
'hostilities' is the definition.
(hostilities between nations)
This is the entire clue.
(Other definitions for war that I've seen before include "Sustained conflict" , "series of engagements" , "Armed hostility" , "Combat" , "Major conflict" .)
'hostilities' is the definition.
(thesaurus)
This is all the clue.
(Other definitions for combat that I've seen before include "Fight - strive against" , "A fight or contest, sometimes mortal" , "Oppose" , "Battle, warfare" , "Conflict" .)