resinlike substance secreted by certain lac insects; used in e.g. varnishes and sealing wax
source: WordNet 3.0
One hundred thousand; also, a vaguely great number; as, a lac of rupees.
source: Webster 1913
A resinous substance produced mainly on the banyan tree, but to some extent on other trees, by the 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.