"You canker blossom!" 3 Shakespearean Insults
1702, from German Furnier, from furnieren "to cover with a veneer, inlay," from French fournir "to furnish, accomplish," from Middle French fornir "to furnish," from a Germanic source (cf. Old High German frumjan "to provide;" see furnish). A word batted back and forth from German to French to German. Figurative sense of "mere outward show of some good quality" is attested from 1868. The verb is recorded from 1728.
veneer ve·neer (və-nēr')
A layer of tooth-colored material, usually porcelain or acrylic resin, attached to and covering the surface of a metal crown or natural tooth structure.