shellack

noun

1. refined lac, a resin usually produced in thin, flaky layers or shells and used in making varnish, phonograph records, insulating materials, etc.
2. a thin, usually clear kind of varnish containing this resin and alcohol

Origin: shel(l) + lac, used as transl. of Fr laque en écailles, lac in fine sheets

transitive verb shellacked, shellacking

1. to apply shellac to; cover or varnish with shellac
2. ☆ Slang
   1. to beat
   2. to defeat decisively