gardy loo

[A]ll the chairs in the family are emptied into this here barrel once a-day; and at ten o'clock at night the whole cargo is flung out of a back windore that looks into some street or lane, and the maid calls Gardy loo to the passengers, which signifies, Lord have mercy upon you! and this is done every night in every house at Haddingborough; so you may guess, Mary Jones, what a sweet savour comes from such a number of profuming pans […]