from The Century Dictionary.
- noun Bright metal foil, used in decorative art to show through a thickness of enamel or painting to alter its color or give it brilliancy; by extension, gilding applied upon a surface, as of wood, papier-maché, etc., upon which painting is to be done in translucent colors.
from the GNU version of the Collaborative International Dictionary of English.
- noun A thin leaf of metal, as for use in gilding or enameling, or to show through a translucent medium.
Sorry, no etymologies found.
I listen to this rural idyll, and it takes suddenly a specialized and technical character: "That's why he makes a paillon.