German industrial city (5)
I believe the answer is:
essen
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">german industrial city</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 essen that I've seen before include "Main industrial city of the Ruhr" , "German industrial centre" , "Krupp HQ (Ger.)" , "city in the Ruhr valley" , "German place name" .)