Frozen sort of dice (4)
I believe the answer is:
iced
'frozen' is the definition.
(I've seen this in another clue)
'sort of dice' is the wordplay.
'sort of' is an anagram indicator.
'dice' anagrammed gives 'ICED'.
(Other definitions for iced that I've seen before include "Decorated with sugary mixture" , "Covered with flavoured sugar topping" , "Chilled - killed" , "Core; card; organ" , "Made very cold" .)