A composition of all the different spirits sold in a dram-shop, collected in a vessel into which the drainings of the bottles and quartern pots are emptied.
Definition taken from The 1811 Dictionary of the Vulgar Tongue, originally by Francis Grose.
all hollow * allsNathan Bailey's 1721 Dictionary of canting and thieving slang
John S. Farmer's collection of canting songs and slang rhymes