Cloth, stuff, or silk purloined by taylors from their employers, which they deposit in a place called hell, or their eye: from the first, when taxed, with their knavery, they equivocally swear, that if they have taken any, they wish they may find it in hell; or, alluding to the second, protest, that what they have over and above is not more than they could put in their eye.—When the scrotum is relaxed or whiffled, it is said they will not cabbage.
Definition taken from The 1811 Dictionary of the Vulgar Tongue, originally by Francis Grose.
bye blow * cabNathan Bailey's 1721 Dictionary of canting and thieving slang
John S. Farmer's collection of canting songs and slang rhymes