Injure, maim (8)
I believe the answer is:
mutilate
I believe this clue is a double definition.
'injure' is the first definition.
(I know this)
'maim' is the second definition.
(I know this)
(Other definitions for mutilate that I've seen before include "Damage very seriously" , "9 across (anag)" , "Severely maim" , "Cut off a part of the odd mule at it" , "Destroy" .)