noun
1.
a protective coating consisting of a resin, cellulose ester, or both, dissolved in a volatile solvent, sometimes with pigment added.
2.
any of various resinous varnishes, especially a resinous varnish obtained from a Japanese tree, Rhus verniciflua, used to produce a highly polished, lustrous surface on wood or the like.
3.
Also called lacquer ware, lacquerware. ware, especially of wood, coated with such a varnish, and often inlaid:
They collected fine Japanese lacquers.
4.
Slang. any volatile solvent that produces euphoria when inhaled.
verb (used with object)
5.
to coat with lacquer.
6.
to cover, as with facile or fluent words or explanations cleverly worded, etc.; obscure the faults of; gloss (often followed by over):
The speech tended to lacquer over the terrible conditions.