Chicago area
I believe the answer is:
loop
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">chicago area</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for loop that I've seen before include "Noose" , "Oval-shaped coil" , "not informed one's out of it" , "Curve that bends round and crosses itself" , "Aircraft manoeuvre; encircle" .)