What is the meaning of Massicot?

lead monoxide, PbO, obtained as a yellow amorphous powder, the fused and crystalline form of which is called litharge; lead ocher. It is used as a pigment; also, lead oxide yellow, as opposed to red lead, which is lead tetroxide Pb3O4.

massicot

guillotine, a machine for cutting paper and sheet metal

Source: wiktionary.org