Citizen of Seoul (6)
I believe the answer is:
korean
'citizen of seoul' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for korean that I've seen before include "From Seoul or Pyongyang?" , "Asian national" , "Citizen of divided country" , "From Pyongyang, perhaps" , "Eg, from Seoul" .)