Aim point (6)
I believe the answer is:
target
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">aim 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 target that I've seen before include "Thing to aim at" , "purpose" , "Reference point to shoot at" , "Goal; victim" , "Thing aimed at" .)