P.C. An inscription on the visiting cards of our modern fine gentleman, signifying that they have called POUR PRENDRE CONGE, i.e. ‘to take leave,’ This has of late been ridiculed by cards inscribed D.I.O. i.e. ‘Damme, I’m off.’
Definition taken from The 1811 Dictionary of the Vulgar Tongue, originally by Francis Grose.
P’s * PacketNathan Bailey's 1736 Dictionary of canting and thieving slang
John S. Farmer's collection of canting songs and slang rhymes