The definition of the term ETOH is simply an acronym for ethyl alcohol. Ethyl alcohol is the type of alcohol found in alcoholic beverages. Its most common usage is in the medical community, as a way of referring to someone's blood alcohol concentration (BAC). The level of alcohol in the body helps determine whether someone is legally intoxicated. It has other applications as well. It seems to be utilized by hospital personnel as a way of disguising the word alcohol, to keep the fact that a person had been drinking from being disclosed. Alcohol, in general, produces feelings of euphoria and relaxation. Ethyl alcohol may also be referred to as ethanol.