massicot

/ˈmæsɪkəʊ/

IPA: /M AE1 S IH0 K AO0 T/

noun
  1. 1

    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.

Source: https://en.wiktionary.org/wiki/massicot