Cicatrix (4)
I believe the answer is:
scar
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">cicatrix</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that cicatrix can be written as scar)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for scar that I've seen before include "Craggy rock formation" , "Old wound - bare cliff" , "Mark on body or tree" , "Limestone cliff or outcrop" , "Identifying mark" .)