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Wiktionary
stomach flu

n. (context informal English) gastroenteritis.

WordNet
stomach flu

n. inflammation of the stomach and intestines; can be caused by Salmonella enteritidis [syn: gastroenteritis, intestinal flu]

Usage examples of "stomach flu".

She had been five or six, and the baby-sitter had canceled because she'd been suffering from stomach flu.

By now his stomach was flopping so hard, he started to wonder if he had a touch of the same stomach flu that had gripped hold of everybody the day before.

Home sick with the stomach flu, never left his house, lots of witnesses.