A quid, from the small pieces of tow with which the vent or touch hole of a cannon is stopped. SEA TERM.
Definition taken from The 1811 Dictionary of the Vulgar Tongue, originally by Francis Grose.
Fice * Fiddle FaddleNathan Bailey's 1736 Dictionary of canting and thieving slang
John S. Farmer's collection of canting songs and slang rhymes