Crag (3)
I believe the answer is:
tor
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">crag</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that crag can be written as tor)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for tor that I've seen before include "Rocky prominence" , "Rot on a hill in Cornwall" , "Rot on rocky peak" , "Rot on a peak in Devon" , "Rocky outcrop" .)