Dead. He wishes to have the senior, or old square-toes, backed; he longs to have his father on six men’s shoulders; that is, carrying to the grave.
Definition taken from The 1811 Dictionary of the Vulgar Tongue, originally by Francis Grose.
Back Biter * Back upNathan Bailey's 1736 Dictionary of canting and thieving slang
John S. Farmer's collection of canting songs and slang rhymes