Identify — location (4)
I believe the answer is:
spot
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">identify</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >'<span class="explanation-format__original">location</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(spot is a kind of location)</span><br/ ><br/ ></span>
(Other definitions for spot that I've seen before include "Small mark; see" , "Notice - stain - pick out" , "Notice; pimple" , "Fix" , "See - blemish" .)