Of a tool, pointed at the ends and with convex sides, as on a willow leaf. The term is applied to an arrowhead, the blade of a slashing sword, or the flattened bow of a fibula and other tools which have been retouched on both faces to produce a flattish effect. Many Upper Paleolithic tools are named after leaves (Solutrean laurel leaf). Some Middle Paleolithic industries are characterized by the presence of bifaces, others by the presence of leaf-shaped objects. Mousterian industries producing leaf-shaped items in central and eastern Europe.