0 a substance obtained from an insect that is melted into small thin pieces and used for making varnish (= a liquid for painting onto surfaces to make them shiny) and for many other purposes:
One of the main ingredients in mascara is shellac.
The choice of shellac or varnish for finishing will depend upon the use and condition of the work to be finished.
Shellac manicures are growing in popularity.
Kim suggested that I take a break from the Shellac and just use a polish.
