Skin on the head (5)
I believe the answer is:
scalp
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">skin on the head</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 scalp that I've seen before include "Track, way" , "Clasp (anag)" , "Skin with hair as trophy" , "Hair producer" , "Cut hair very short" .)