Also called hexahydrothymol, peppermint camphor. Chemistry, Pharmacology. a colorless, crystalline, slightly water-soluble alcohol, C 10 H 20 O, obtained from peppermint oil or synthesized: used chiefly in perfumes, confections, cigarettes, and liqueurs and in medicine for colds and nasal disorders for its cooling effect on mucous membranes.
white crystalline substance, 1862, from German Menthol, coined 1861 by Alphons Oppenheim from Latin mentha "mint" (see mint (n.1)) + oleum "oil" (see oil (n.)). So called because it was first obtained from oil of peppermint.