City nicknamed Auld Reekie (9)
I believe the answer is:
edinburgh
'city nicknamed auld reekie' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for edinburgh that I've seen before include "Capital city of Scotland" , "fringe city" , "town" , "Auld Reekie" , "City on the Firth of Forth" .)