Rocky height (3)
I believe the answer is:
tor
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">rocky height</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for tor that I've seen before include "Rocky height, eg Mam" , "eminence" , "Rot on rocky peak" , "A rocky hill in Devon" , "Rot on a hill in Cornwall" .)