Book-keeper making flesh creep (5)
I believe the answer is:
shelf
'book-keeper' is the definition.
(books may be kept on a shelf)
'flesh creep' is the wordplay.
'creep' indicates anagramming the letters (letters creep around into new positions).
'flesh' with letters rearranged gives 'SHELF'.
'making' acts as a link.
(Other definitions for shelf that I've seen before include "board" , "Storage ledge" , "books supporter" , "Place for book -- or old spinster?" , "grass down under" .)