Combatant, scrapper (7)
I believe the answer is:
fighter
This clue is a double definition.
'combatant' is the first definition.
(I know that combatant can be written as fighter)
'scrapper' is the second definition.
(I know that scrapper can be written as fighter)
(Other definitions for fighter that I've seen before include "Plane" , "Warplane" , "Freight (anag.)" , "Fast military aircraft" , "Boxer; warrior" .)