Prominent rock on a hill (3)
I believe the answer is:
tor
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">prominent rock on a hill</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 "It rises" , "eminence" , "Rocky prominence" , "Feature of Dartmoor" , "Rocky crag" .)