Source : Webster's Revised Unabridged Dictionary (1913)
, a scale-shaped insect, the female of which fixes herself on
the bark, and exudes from the margin of her body this resinous
substance.
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.
{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}.