Cut up cubes (4)
I believe the answer is:
dice
This clue is a double definition.
'cut up' is the first definition.
(dice can mean to cut into cubes)
'cubes' is the second definition.
(I have seen 'Small cubes ' mean 'dice' so perhaps 'cubes' could also mean 'dice')
(Other definitions for dice that I've seen before include "Cut into small cubes" , "Numbered cube(s)" , "Gamble; cut into cubes" , "Take a risk" , "Gambling pieces" .)