Subdivisions of a written work (8)
I believe the answer is:
chapters
'subdivisions of a written work' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for chapters that I've seen before include "Subdivisions of a written work" , "Divisions of written work" , "Episodes" , "Numbered sections of a book" , "Divisions of a book" .)