Section (3)
'section' is the definition.
(synonyms)
This is all the clue.
(Other definitions for part that I've seen before include "Bit - leave" , "Separate - role" , "Divide; role" , "Region" , "Some - theatrical role" .)
'section' is the definition.
(I know that section can be written as division)
This is the entire clue.
(Other definitions for division that I've seen before include "It can be long or short, in arithmetic" , "Formal vote in Parliament" , "Arithmetic operation" , "Large army unit" , "military unit" .)
'section' is the definition.
(I know that section can be written as segment)
This is all the clue.
(Other definitions for segment that I've seen before include "Division" , "Section of a circle" , "split up" , "Part of citrus fruit" , "Part of a circle cut off by a chord" .)
'section' is the definition.
(thesaurus)
This is the entire clue.
(Other definitions for portion that I've seen before include "Piece of a whole" , "Helping - fate" , "Segment" , "Share, helping" , "Serving" .)
'section' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for piece that I've seen before include "Bishop, for one" , "Portion, bit" , "Morsel" , "wedge a > bit" , "Portion; musical work" .)
'section' is the definition.
(both can mean part)
This is the entire clue.
(Other definitions for bit that I've seen before include "Small portion - part of drill" , "Morsel" , "Piece; horse's restraint" , "Cutting piece of a drill (3)" , "The boring-piece of a drill" .)