PROG,
Meat. Rum Prog., nice eating. The Cull tipt us rum Prog; the Gentleman, so serve a Turn; a Cat's Foot.
· 
· 
Entry taken from 1736 Canting Dictionary, by Nathan Bailey.
· ·
Prog in the 1811 Vulgar Tongue
Also see examples in Canting Songs and Slang Rhymes collected by John S. Farmer (1896).