Carry out appliance (9)
I believe the answer is:
implement
This clue is a double definition.
'carry out' is the first definition.
(I've seen this before)
'appliance' is the second definition.
(I've seen this before)
(Other definitions for implement that I've seen before include "Put into effect; tool" , "Perform" , "Put into action - utensil" , "appliance" , "Complete" .)