Lozenge

Webster's Practical Dictionary- A Practical Dictionary of the Englih Language · 1884 · p. 245

loz'enj, n. A figure with four equal sides, having 2 acute and 2 obtuse angles; a diamond; a rhomb; a small cake of sugar, etc., often medicated, orig. of a diamond shape.— Lozenge molding. (Arch.) A molding used in Norman architecture, Lozenge Molding, having lozenge-shaped compartments or ornaments.