Pilfer a couple of books in Coop (7)
I believe the answer is:
cabbage
'pilfer' is the definition.
(synonyms)
'a couple of books in coop' is the wordplay.
'couple of' indicates the doubling of some letters.
'books' becomes 'b' (this could be a standard abbreviation which I don't know about).
'in' indicates putting letters inside.
'coop' becomes 'cage' (synonyms).
'b' doubled is 'bb'.
'a'+'bb'='abb'
'abb' put inside 'cage' is 'CABBAGE'.
Can you help me to learn more?
(Other definitions for cabbage that I've seen before include "Savoy vegetable" , "Vegetable with dense head of leaves" , "Kind of 13" , "Vegetable plant" , "Variety of brassica" .)