User Contributed Dictionary
Verb
retching- present participle of retch
Extensive Definition
Retching is a process in the human body where
gastric (and sometimes
duodenal) contents are
forced into the esophagus, but do not enter
the pharynx. Retching usually precedes vomiting, when the upper
esophageal sphincter remains closed. If the upper esophageal
sphincter is open, vomiting occurs.