1º_ Mason tool to smooth revoked surfaces. It is also called in confectionery to the spatula to spread the toppings. It comes from the Lombard fratazzo, with the same meaning. See fratás . 2º_ In lunfardo "pasar fratacho" is also used as franelear . See frotism.
It is the same as platacho. It is a way of calling in Argentina and Uruguay a palustre or trowel, a tool used by masons to match cement in constructions.
FRATACHO in Argentina and Uruguay: trowel, platacho, board with a handle used by masons to smooth stucco, plaster or freshly poured cement.