A couple of books returned to Big Brother? (5)
I believe the answer is:
abbot
'big brother?' is the definition.
(I've seen this in another clue)
'a couple of books returned to' is the wordplay.
'couple of' shows that letters should be duplicated.
'books' becomes 'b' (this could be a standard abbreviation which I don't know about).
'returned' shows that the letters should be reversed in order.
'to' written backwards gives 'ot'.
'b' duplicated is 'bb'.
'a'+'bb'+'ot'='ABBOT'
Can you help me to learn more?
(Other definitions for abbot that I've seen before include "Head of monastery" , "Religious man" , "Head monk" , "Supervisor of brothers" , "Monastic chief" .)