European books bound to keep one inside wanting more (8)
I believe the answer is:
esurient
'wanting more' is the definition.
(esurient means greedy)
'european books bound to keep one inside' is the wordplay.
'european books' becomes 'ent' (I can't justify this - if you can you should give a lot more credence to this answer).
'bound to' becomes 'sure' (synonyms).
'keep' is an insertion indicator.
'one' becomes 'i' (Roman numeral).
'inside' indicates putting letters inside.
'sure' going around 'i' is 'surie'.
'ent' going around 'surie' is 'ESURIENT'.
(Other definitions for esurient that I've seen before include "Hungry; retinues (anag.)" , "Greedy; ensure it (anag.)" , "Hungry, greedy" , "Rapacious" , "could eat a horse" .)