(n.) A plastic, unctuous clay of a grayish white color, -- used in making tobacco pipes and various kinds of earthenware, in scouring cloth, and in cleansing soldiers' equipments.

achromatization albification blanching bleach bleaching calcimine decoloration decolorization decolorizing discoloration etiolation fading frosting grizzling lightening madder bleach market bleach paling pipe clay silvering whitewash whitewashing whiting