CURSITORS,
reduced Lawyers, assuming to themselves the Knowledge of the Quirks and Quiddities of the Law, and are perpetually fomenting litigious Brawls, and insignificant Contentions, among the Scum of the Vulgar.
Cursitors in the 1811 Vulgar Tongue
Also see examples in Canting Songs and Slang Rhymes collected by John S. Farmer (1896).