Wiktionary
n. (context pathology English) A condition where the contents of the sufferer's stomach ferment creating alcohol.
Wikipedia
Auto-brewery syndrome, also known as gut fermentation syndrome, is a rare medical condition in which intoxicating quantities of ethanol are produced through endogenous fermentation within the digestive system. One gastrointestinal organism, Saccharomyces cerevisiae, a type of yeast, has been identified as a pathogen for this condition.
Claims of endogenous fermentation of this type have been used as a defense against drunk driving charges.
One case went undetected for 20 years.
It has also been investigated, but eliminated, as a possible cause of sudden infant death syndrome.
A variant occurs in persons with liver abnormalities that prevent them from excreting or breaking down alcohol normally. Patients with this condition can develop symptoms of auto-brewery syndrome even when the gut yeast produces a quantity of alcohol that is too small to intoxicate a healthy individual.