Slice, bit (5)
I believe the answer is:
piece
I believe this clue is a double definition.
'slice' is the first definition.
(I know that slice can be written as piece)
'bit' is the second definition.
(I know that bit can be written as piece)
(Other definitions for piece that I've seen before include "Part - portion" , "Bishop, for one" , "Segment" , "that may follow show after work party?" , "wedge a > bit" .)