Green’s Dictionary of Slang

eightball adj.

a derog. ref. to a black person.

1937		C. Himes ‘The Night’s for Cryin’’ in Coll. Stories (1990) 134: Somehow his Panama still clung on his eight ball head [...] and his red lips were a split, bleeding incision in his black face.
1966		R. Stone Hall of Mirrors (1987) 316: Them eight ball friends of yours.
2002		‘Touré’ Portable Promised Land (ms.) 251: Sistuhgirl’s desire [...] to see that oily, ashy, greasy, eight-ball black boy kept clean.

In compounds

eightball chick (n.)

a female gang member.

1997		G. Sykes [title] 8 Ball Chicks: A Year in the Violent World of Girl Gangs.
1999		J. Ridley Everybody Smokes in Hell 84: The girl occupying his lap was an eight-ball chick, a gangsta bitch.