The rest (9)
I believe the answer is:
remainder
'the rest' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for remainder that I've seen before include "Rest - sell off (books) cheap" , "Dispose of unsold copies of book at a reduced price" , "Unsold book; rest" , "Sell off book stock cheaply" , "part that is still to come" .)