City on a fjord (4)
I believe the answer is:
oslo
'city on a fjord' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for oslo that I've seen before include "Capital in throes of go-slow" , "Scandinavian port" , "Norwegian city, formerly Kristiania" , "Northern capital of Czechoslovakia?" , "Nordic capital" .)