Chopped into cubes (5)
I believe the answer is:
diced
'chopped into cubes' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for diced that I've seen before include "cut into little pieces?" , "Chopped; gambled" , "Chopped into cubes" , "Gambled or cut into cubes" , "Played with small cubes" .)