High and Low. Cheats, who by sham pretences, and wonderful stories of their sufferings, impose on the credulity of well meaning people. See Rum Gagger.
Definition taken from The 1811 Dictionary of the Vulgar Tongue, originally by Francis Grose.
Gage * GalimaufreyNathan Bailey's 1736 Dictionary of canting and thieving slang
John S. Farmer's collection of canting songs and slang rhymes