City near Cologne (5)
I believe the answer is:
essen
'city near cologne' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for essen that I've seen before include "Industrial centre of the Ruhr" , "Main industrial city of the Ruhr" , "Industrial city of northwest Germany" , "European city" , "city in the Ruhr valley" .)