Raise bottom (4)
I believe the answer is:
rear
I believe this is a double definition.
'raise' is the first definition.
(as in rearing children)
'bottom' is the second definition.
(I know that bottom can be written as rear)
(Other definitions for rear that I've seen before include "what can be brought up, finally" , "The back part of something" , "Bring up - back end" , "early, long before now" , "Foster" .)