Real Dictionary

lacquer
mass noun: Lacquer is a clear sticky liquid that you spray on your hair in order to hold it in place.
variable noun: Lacquer is a special liquid which is painted on wood or metal in order to protect it and to make it shiny.

lacquer in American English
a coating substance consisting of resinous materials, as cellulose esters or ethers, shellac, or gum or alkyd resins, dissolved in ethyl alcohol or other solvent that evaporates rapidly on application, leaving a tough, adherent film: pigments are often ad
noun: a protective coating consisting of a resin, cellulose ester, or both, dissolved in a volatile solvent, sometimes with pigment added
transitive verb: to coat with lacquer

lacquer in British English
noun: a hard glossy coating made by dissolving cellulose derivatives or natural resins in a volatile solvent
verb: to apply lacquer to

lacquer in the Pharmaceutical Industry
A lacquer is a clear or colored synthetic coating for tablets made by dissolving nitrocellulose or other cellulose derivatives.