brownstone /ˈbɹaʊnˌstoʊn/noun 2verb 1forms 3 noun2 •A variety of brown to red-brown sandstone once popular as a building material. •A row house built of brownstone, especially in New York City.Lived in a brownstone, lived in the ghetto, I’ve lived all over this town. — 1979 verb1 •(historical) To scour (steps) with a donkey stone. formsbrownstoned · brownstoning · brownstones