Collection of works (7)
I believe the answer is:
omnibus
'collection of works' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for omnibus that I've seen before include "Compendium volume" , "Compound volume" , "Several books in one" , "Old (Clapham?) transport" , "One can expect to be moved by this" .)