Part, segment (7)
I believe the answer is:
section
I believe this clue is a double definition.
'part' is the first definition.
(I know that part can be written as section)
'segment' is the second definition.
(I know that segment can be written as section)
(Other definitions for section that I've seen before include "unit" , "Element" , "Divide; part" , "Subdivision of a newspaper" , "Department, division" .)