overglaze noun 2verb 2forms 3 noun2 •The outer layer or coat of glaze on a piece of pottery •A decoration, usually enamel, applied over a glaze. verb2 •To apply overglaze to. •To glaze excessively.If the dish is "overglazed," the glaze will "run" and bubble. — 1904 formsoverglazed · overglazing · overglazes