A person who regularly uses heroin.
A working-class citizen in a metropolitan area.
A chav.
A person living in a university area who is not associated with the university.
A person who lives in a city or town, or has an urban outlook.
A person familiar with the town (urbanised centre of a city) and with going out on the town; a street-wise person.
A person who has moved from a town or city to a rural area. Especially, one who is perceived not to have adopted rural ways.