Executes deer (4)
I believe the answer is:
does
I believe this is a double definition.
'executes' is the first definition.
(doing is a kind of executing)
'deer' is the second definition.
(I've seen this in other clues)
(Other definitions for does that I've seen before include "Carries out" , "takes one for a ride" , "Performs; female rabbits" , "is active" , "Suffices" .)