• (n.) A yellow or brown amorphous substance obtained as a sublimation product in the flues of smelting furnaces of zinc, and consisting of a crude zinc oxide. Found on http://thinkexist.com/dictionary/meaning/tutty/
an impure oxide of zinc obtained from the flues of smelting furnaces, or a similar substance occurring as a native mineral, used chiefly as a polishing powder. Found on https://www.infoplease.com/dictionary/tutty