Stow you; be silent, or hold your peace. Stow your whidds and plant’em, for the cove of the ken can cant’em; you have said enough, the man of the house understands you.
Definition taken from The 1811 Dictionary of the Vulgar Tongue, originally by Francis Grose.
See also the definition in Nathan Bailey's 1736 dictionary of canting and thieving slang.
Stoup * Strait-lacedNathan Bailey's 1736 Dictionary of canting and thieving slang
John S. Farmer's collection of canting songs and slang rhymes