• Webster's Revised Unabridged Dictionary
    • Shell-lac A phonograph record, made of a material containing shellac; -- no longer manufactured.
    • Shell-lac A solution of shellac{1} in alcohol or other volatile solvent, used as a varnish.
    • Shell-lac Lac which has been reduced to a thin crust. See the Note under 2d Lac.
    • ***
Chambers's Twentieth Century Dictionary
    • Shell-lac thin plates of resin prepared by melting the seed-lac in cotton-cloth bags, straining, and allowing it to drop on to sticks or leaves
    • ***


Webster's Revised Unabridged Dictionary
Shell, + lac, a resinous substance; cf. D. shellak, G. schellack,
Chambers's Twentieth Century Dictionary
Pers. lak—Sans. lákshá, the lac insect—rañj, to dye.


In literature:

In the case of shell-lac, therefore, space is an insulator.
"Faraday As A Discoverer" by John Tyndall
Put the shell-lac in the naphtha and let it dissolve.
"Enquire Within Upon Everything" by Anonymous
Laccha (Shell-lac) from Pegu and Balaguate.
"The Story of Geographical Discovery" by Joseph Jacobs
These were shell-lac, sulphur, fused and cast borate of lead, flint glass well-covered with a film of lac, and spermaceti.
"Experimental Researches in Electricity, Volume 1" by Michael Faraday
On the arms they have ten or twelve bangles of ivory, or in default of this lac, horn or cocoanut-shell.
"The Tribes and Castes of the Central Provinces of India" by R. V. Russell
That sulphur and shell-lac when aflame are not electric.
"On the magnet, magnetick bodies also, and on the great magnet the earth" by William Gilbert of Colchester