1. 呕出；吐出
If you upchuck, food and drink comes back up from your stomach and out through your mouth.

verb

1. eject the contents of the stomach through the mouth

e.g. After drinking too much, the students vomited
He purged continuously
The patient regurgitated the food we gave him last night

Synonym: vomitvomit uppurgecastsickcatbe sickdisgorgeregorgeretchpukebarfspewspuechuckhonkregurgitatethrow up