brownback noun3 •A bird, the dowitcher or red-breasted snipe. •A postage stamp printed in brown ink, used in the 1890s.Of course the printers are not all doing the same kind of work: some are printing the greenbacks, some the brownbacks, some the faces, and others the backs and faces, of the revenue stamps. — 1894 •A note of scrip printed on brown paper, such as that issued by the city of St. Louis during a financial crisis.There are greenbacks for one department of the tithing-house, brownbacks for another, and so on. By using this scrip the Church is able to create a market for considerable quantities of the tithing. — 1889 formsbrownbacks