Spider-Woman keeps a Bible (9)
I believe the answer is:
'spider-woman keeps a bible' is the definition.
I can't tell whether this definition defines the answer.
'woman keeps a bible' is the wordplay.
'woman' becomes 'hester' ().
'keeps' means one lot of letters goes inside another.
'bible' becomes 'rv' (Revised Version, revision of King James Bible).
'hester' placed around 'arv' is 'HARVESTER'.
Can you help me to learn more?
(Other definitions for harvester that I've seen before include "Reaping-machine" , "may belong to farmer" , "One gathering in crops" , "Crop gatherer" , "Long-legged spider" .)