A kick or blow: from the words mea culpa, being that part of the popish liturgy at which the people beat their breasts; or, as the vulgar term is, thump their craws.
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.
Cully * CundumNathan Bailey's 1736 Dictionary of canting and thieving slang
John S. Farmer's collection of canting songs and slang rhymes