analeptic (anÂ´ÉlepÂ´tik), n 1. an agent that acts to overcome depression of the central nervous system. n 2. a strong central nervous system stimulant that is used to restore consciousness, especially from a drug-induced coma. 1. a drug that acts as a stimulant to the central nervous system, such as caffeine and amphetamine.
Shellac is scraped from the bark of the trees where the female lac bug, Kerria lacca (Order Hemiptera, Family Kerriidae), also known as Laccifer lacca, secretes it to form a tunnel-like tube as it traverses the branches of the tree.
The form of shellac used by woodworkers as a finish is formed by dissolving flakes of shellac in an alcohol solvent. This shellac and alcohol mixture is then applied to the workpiece by the use of a rag.