Woman binding books, works of an explicit nature (7)
I believe the answer is:
erotica
'works of an explicit nature' is the definition.
(sexually explicit works)
'woman binding books' is the wordplay.
'woman' becomes 'erica' ().
'binding' indicates putting letters inside.
'books' becomes 'OT' (abbreviation for Old Testament).
'erica' enclosing 'ot' is 'EROTICA'.
(Other definitions for erotica that I've seen before include "works to stimulate passion?" , "Raunchy material" , "Amatory literature" , "sexy stuff" , "literature of a sort" .)