Green’s Dictionary of Slang

tricking n.

[trick v. (1)]

(orig. US black) having sex for money; also as adj.

[US]J.L. Kuethe ‘Prison Parlance’ in AS IX:1 28: tricking broad. A prostitute.
[US]Monteleone Criminal Sl. (rev. edn) 243: tricking broad A prostitute.
[US]C. Cooper Jr Scene (1996) 237: Where’d you get all the money? [...] Don’t tell me you made it all tricking.
[US]E. Torres After Hours 24: He wants me trickin’ on Eighth Avenue.
[US]A.K. Shulman On the Stroll 132: Tricking was like Indian wrestling — seeing whose contempt was stronger: his toward her for selling it, hers toward him for buying it.
[US]W.T. Vollmann Whores for Gloria 54: The first time she went out tricking she wasn’t nervous.
[US]E. Little Another Day in Paradise 8: Knowing she’ll end up tricking or boosting if I don’t make a score soon.