Front of the lower leg (4)
I believe the answer is:
shin
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">front of the lower leg</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 shin that I've seen before include "Front end of the tibia" , "Long bone between knee and ankle" , "Climb" , "letter from Israel" , "Part of the human leg" .)