Like power to rent (6)
I believe the answer is:
please
'like' is the definition.
(pleasing is a kind of liking)
'power to rent' is the wordplay.
'power' becomes 'p'.
'to rent' becomes 'lease' ('lease' can be a synonym of 'rent').
'p'+'lease'='PLEASE'
(Other definitions for please that I've seen before include "Polite request - make someone happy" , "suit" , "Make cheerful" , "See 10 Across" , "Cause (someone) to feel satisfied" .)