from The Century Dictionary and Cyclopedia
- n. Painting in vitrifiable colors, especially upon a surface of porcelain, glass, or metal, the work being subsequently fired in a muffle or kiln. See enamel.
Sorry, no etymologies found.
Like all ochres, it is characterized by permanence in water, oil, crayons, and fresco; and is, like most of them, available in enamel-painting.