Green’s Dictionary of Slang

(US black) of a prostitute, experienced.

1969		‘Iceberg Slim’ Pimp 75: Is the bitch qualified? Is she a whore?
1973		D. Goines Street Players 49: If a bitch is qualified to get good money, I don’t care if a nigger haas got two big dope bags.
1979		‘Iceberg Slim’ Airtight Willie and Me 35: Lots of qualified black and white ’hos gonna be here.