Caretaker (7)
I believe the answer is:
janitor
'caretaker' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for janitor that I've seen before include "Caretaker or doorkeeper" , "Person looking after building" , "Caretaker (mainly US)" , "One employed to clean and maintain a building" , "(In Scotland) school caretaker" .)