Furthest point (9)
I believe the answer is:
extremity
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">furthest point</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 extremity that I've seen before include "final piece" , "The utmost limit" , "Furthest point; a hand or foot" , "Bound" , "Desperate situation - toe?" .)