From The Collaborative International Dictionary of English v.0.48 [gcide]:
Shellac \Shel"lac`\, Shell-lac \Shell"-lac`\, n. [Shell + lac a
resinous substance; cf. D. shellak, G. schellack.]
1. Lac which has been reduced to a thin crust. See the Note
under 2d {Lac}.
[1913 Webster]
2. A solution of shellac[1] in alcohol or other volatile
solvent, used as a varnish.
[PJC]
3. A phonograph record, made of a material containing
shellac; -- no longer manufactured. [Obsolescent] --RHUD
[PJC]
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Lac \Lac\, n. [Per. lak; akin to Skr. l[=a]ksh[=a]: cf. F.
lague, It. & NL. lacca. Cf. {Lake} a color, {Lacquer},
{Litmus}.]
A resinous substance produced mainly on the banyan tree, but
to some extent on other trees, by the {Laccifer lacca}
(formerly {Coccus lacca}), a scale-shaped insect, the female
of which fixes herself on the bark, and exudes from the
margin of her body this resinous substance.
[1913 Webster]
Note: {Stick-lac} is the substance in its natural state,
incrusting small twigs. When broken off, and the
coloring matter partly removed, the granular residuum
is called {seed-lac}. When melted, and reduced to a
thin crust, it is called {shell-lac} or {shellac}. Lac
is an important ingredient in sealing wax, dyes,
varnishes, and lacquers.
[1913 Webster]
{Ceylon lac}, a resinous exudation of the tree {Croton
lacciferum}, resembling lac.
{Lac dye}, a scarlet dye obtained from stick-lac.
{Lac lake}, the coloring matter of lac dye when precipitated
from its solutions by alum.
{Mexican lac}, an exudation of the tree {Croton Draco}.
[1913 Webster]
From WordNet (r) 3.0 (2006) [wn]:
shellac
n 1: lac purified by heating and filtering; usually in thin
orange or yellow flakes but sometimes bleached white
2: a thin varnish made by dissolving lac in ethanol; used to
finish wood [syn: {shellac}, {shellac varnish}]
v 1: cover with shellac; "She wanted to shellac the desk to
protect it from water spots" [syn: {shellac}, {shellack}]
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