Half-cut kids roving in Slavic city (5)
I believe the answer is:
kirov
'city' is the definition.
(I have seen 'Russian city' mean 'kirov' so perhaps 'city' could also mean 'kirov')
'half-cut kids roving in slavic' is the wordplay.
'half cut' suggests halving the letters.
'roving in slavic' becomes 'rov' (I can't explain this - if you can you should believe this answer much more).
'kids' with half the letters taken is 'ki'.
'ki'+'rov'='KIROV'
Can you help me to learn more?
(Other definitions for kirov that I've seen before include "St Petersburg ballet company, founded c. 1740" , "Russian city and ballet company" , "former ballet company" , "Russian dancers" , "Stalin's aide" .)