Chilled with cubes (4)
I believe the answer is:
iced
'chilled with cubes' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for iced that I've seen before include "Glazed" , "despatched to American underworld" , "Frozen - with a sugary topping" , "Frozen, chilled" , "Dressed in a sweet coat" .)