Bring up this when last? (4)
I believe the answer is:
rear
This clue might be a double definition.
'bring up' is the first definition.
(as in rearing children)
'when last?' is the second definition.
'rear' can be an answer for 'last?' (thesaurus). I am not sure about the 'when' bit.
'this' is the link.
Can you help me to learn more?
(Other definitions for rear that I've seen before include "Stern" , "Bring up - the tail" , "Buttocks - rise up" , "Bottom" , "parent" .)