Highest point or level (8)
I believe the answer is:
pinnacle
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">highest point</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >'<span class="explanation-format__original">level</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(pinnacle is a kind of level)</span><br/ ><br/ ></span>
(Other definitions for pinnacle that I've seen before include "The highest point, say of fame" , "The highest point, peak" , "Place inn on the very top" , "High pointed piece of rock" , "Height of success" .)