Putty
calcined tin, or oxide of tin and lead mixed in various proportions, used as polishing powder by opticians and lapidaries. In plastering, a fine mortar, nearly all lime, used in stopping crevices of shrinkage. In glazing, a composition of pounded whiting and linseed oil, beaten up into a tough tenacious cement. In pottery, the mixture of ground materials in which in potteries earthenware is dipped for glazing. In foundry work, the mixture of clay and horsedung used in making molds in foundries.