Oxford University sent up Disney’s Robin Hood? (6)
I believe the answer is:
outlaw
'robin hood?' is the definition.
(robin hood is a kind of outlaw)
'oxford university sent up disney's' is the wordplay.
'oxford university' becomes 'ou'.
'sent up' shows that the letters should be reversed in order.
'disney' becomes 'walt' (Walt Disney).
'walt' written backwards gives 'tlaw'.
'ou'+'tlaw'='OUTLAW'
(Other definitions for outlaw that I've seen before include "He broke the rules in the old West" , "Robin Hood figure?" , "Josey Wales was one" , "Bandit or fugitive from justice" , "A fugitive from legal justice" .)