Bring up, or something to bring up (4)
I believe the answer is:
rear
'bring up or something to bring up' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for rear that I've seen before include "Bring up (children)" , "Rump" , "Rare at the back" , "Bring up or stand up on hind legs" , "Breed or bring up" .)