Duck on huge lake in city (4)
I believe the answer is:
oslo
'city' is the definition.
(Norwegian city)
'duck on huge lake' is the wordplay.
'duck' becomes 'o' (resembles zero - 'duck' in cricket).
'on' says to put letters next to each other.
'huge' becomes 'os' (abbreviation for outsize).
'lake' becomes 'L' (geographical abbreviation).
'os'+'l'='osl'
'o' after 'osl' is 'OSLO'.
'in' is the link.
(Other definitions for oslo that I've seen before include "Nordic city" , "European capital city (found in Czechoslovakia!)" , "Go solo to European capital" , "Nordic capital" , "Scandinavian capital" .)