Bits, portions (6)
I believe the answer is:
pieces
I believe this clue is a double definition.
'bits' is the first definition.
('piece' can be a synonym of 'bit')
'portions' is the second definition.
(piece is a kind of portion)
(Other definitions for pieces that I've seen before include "Chessmen" , "Bits < of sandwiches" , "Bits, portions" , "barrels of wine" , "Portions, parts" .)