a preparation consisting of resinous matter, as copal or lac, dissolved in an oil (oil varnish) or in alcohol (spirit varnish) or other volatile liquid. When applied to the surface of wood, metal, etc., it dries and leaves a hard, more or less glossy, usually transparent coating.
2.
the sap of certain trees, used for the same purpose (natural varnish).
3.
any of various other preparations similarly used, as one having India rubber, pyroxylin, or asphalt as its chief constituent.
4.
a coating or surface of varnish.
5.
something resembling or suggesting a coat of varnish; gloss.
to give a superficially pleasing appearance to, especially in order to deceive: to varnish the truth.
Origin: 1300–50; Middle English varnisch < Middle French vernis, verniz < Medieval Latin vernicium sandarac < Medieval Greek bernī́kē, syncopated variant of Greek Berenī́kē, city in Cyrenaica