Scotland's largest city (7)
I believe the answer is:
glasgow
'scotland's largest city' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for glasgow that I've seen before include "Scots city" , "Scottish city on the Clyde" , "Scotland's largest city" , "European City of Culture, 1990" , "City of strangely low gags" .)