denatured alcohol

ethyl alcohol denatured with methyl alcohol to prevent its use as an alcoholic beverage

methylated spirit used in the practice of medicine (especially for cleansing the skin before injections or before surgery)

the intoxicating agent in fermented and distilled liquors; used pure or denatured as a solvent or in medicines and colognes and cleaning solutions and rocket fuel; proposed as a renewable clean-burning additive to gasoline