Hire; use (6)
I believe the answer is:
employ
I believe this is a double definition.
'hire' is the first definition.
(I know that hire can be written as employ)
'use' is the second definition.
(I know that use can be written as employ)
(Other definitions for employ that I've seen before include "Put to use" , "occupation" , "Give work to (person)" , "Hire; use" , "Use or take on" .)