A woman’s hat with a very wide rim.
1821. An entire flat of Leghorn is extended over a small body like the shade of a spreading oak over a mushroom.—Mass. Spy, Oct. 17.
1824. A modern Leghorn flat on the head of an ebon beauty.—The Microscope, Albany, Feb. 28.
1824. The bill proposed a duty upon all Leghorn hats, flats, or bonnets, or the grass braids or flats of which they are made.—Liberty Hall and Cincinnati Gazette, May 28.
1855. A good-looking young squaw, who wore a large ‘flat,’ to save her complexion.—Knick. Mag., xlv. 566 (June).
