What does "champleve" mean?

Champleve: Having the ground engraved or cut out in the parts to be enameled; inlaid in depressions made in the ground; -- said of a kind of enamel work in which depressions made in the surface are filled with enamel pastes, which are afterward fired; also, designating the process of making such enamel work. --n. A piece of champlevé enamel; also, the process or art of making such enamel work; champlevé work.