City in northern France (5)
I believe the answer is:
lille
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">city in northern france</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 lille that I've seen before include "Industrial city of northern France" , "European city" , "City in northern France, Flanders" , "Eurostar stop" , "City of northern France, close to Belgium" .)