a colourless volatile flammable liquid which is produced by the natural fermentation of sugars and is the intoxicating constituent of wine, beer, spirits, and other drinks, and is also used as an industrial solvent and as fuel.
There are three main types of alcohol that are cosumed : isopropyl, methyl, and ethyl. All are toxic, and only ethyl, or grain, alcohol can be consumed by humans, but the others find use as sterilizing agents, or as fuels.