Judge supports material torture (8)
I believe the answer is:
lacerate
'torture' is the definition.
(thesaurus)
'judge supports material' is the wordplay.
'judge' becomes 'rate' (rating is a kind of judging).
'supports' is a charade indicator (letters next to each other) (bottom letters provide a support for the top ones).
'material' becomes 'lace' (lace is a kind of material).
'rate' put after 'lace' is 'LACERATE'.
(Other definitions for lacerate that I've seen before include "Cut, leaving jagged edges" , "Harrow" , "Injure be tearing, wound roughly" , "Tear or cut (flesh) deeply" , "Clear tea (anag.)" .)