A bit part (5)
I believe the answer is:
piece
I believe this is a double definition.
'a bit' is the first definition.
(a bit is a small piece)
'part' is the second definition.
(synonyms)
(Other definitions for piece that I've seen before include "Single article" , "Segment" , "Chessman; portion" , "King, perhaps" , "Unpleasant character" .)