WHIT,
Newgate. As, Five Rum-padders, are rub'd in the Darkmans and of the Whit, and are pik'd into the Deuseaville; Five Highway-men in the Night broke newgate, and are gone into the Country.
Whit in the 1811 Vulgar Tongue
Also see examples in Canting Songs and Slang Rhymes collected by John S. Farmer (1896).