Turned to bone (8)
I believe the answer is:
ossified
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">turned to bone</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for ossified that I've seen before include "Turned to bone with age" , "Fossilised, petrified" , "Made rigid and set into a conventional pattern" , "If so, dies being turned into bone" , "Made hard like bone - or commonly drunk" .)