City break (5)
I believe the answer is:
split
I believe this is a double definition.
'city' is the first definition.
(I have seen 'European city' mean 'split' so perhaps 'city' could also mean 'split')
'break' is the second definition.
(splitting is a kind of breaking)
(Other definitions for split that I've seen before include "Divide into portions" , "Cause fission of (atom)" , "Break; fissure" , "somewhere on the Adriatic?" , "Cleavage" .)