chamotte|ʃaˈmɒt| [Fr., ad. G. schamotte fire-clay.] Fragments of burnt fire-clay ground to powder and used with fresh fire-clay in making new vessels. 1890Thorpe Dict.Appl.Chem. I. 502 Chamotte, a mixture of fire-clay and burnt pottery used for making fire-bricks, crucibles, pipes, &c.