Green’s Dictionary of Slang

(S.Afr.) Hillbrow, a densely populated, tough, high-rise suburb of Johannesburg.

1975		Sun. Times (Johannesburg) 15 June 3: ‘I hailed the first cab I saw and asked him to head for the “Brow” (Hillbrow),’ he said [DSAE].
1989		Scope 24 Mar. 46: I got to know the notorious ’Brow at the age of 12, where it nurtured me and let me suckle its poisonous breast and get fat on corruption. It’s a place where only the tough survive [DSAE].