| Noun | 1. | vomiting - the reflex act of ejecting the contents of the stomach through the mouthrumination - regurgitation of small amounts of food; seen in some infants after feeding haematemesis, hematemesis - vomiting blood hyperemesis - severe and excessive vomiting inborn reflex, innate reflex, instinctive reflex, physiological reaction, reflex, reflex action, reflex response, unconditioned reflex - an automatic instinctive unlearned reaction to a stimulus |