alcohol - any of a series of volatile hydroxyl compounds that are made from hydrocarbons by distillation

steroid - any of several fat-soluble organic compounds having as a basis 17 carbon atoms in four rings; many have important physiological effects

cholesterin, cholesterol - an animal sterol that is normally synthesized by the liver; the most abundant steroid in animal tissues

ergosterol - a plant sterol that is converted into vitamin D by ultraviolet radiation