Green’s Dictionary of Slang

schwartze adj.

also shvartze
[schwartze n. (1)]

black, African-American.

[US](con. 1964–8) J. Ellroy Cold Six Thousand 90: Shvartze pimps. ‘Talent scouts.’ Cockamamie ‘producers.’.
[US]J. Stahl Pain Killers 90: You sure you never topped no schwarze ass.
[US]J. Ellroy Widespread Panic 64: ‘[Y]ou’ve got eight schvartze girlfriends’.
[UK]R. Milward Man-Eating Typewriter 327: Vagary to Notting Hill or another schvartz neighbourhood.