1. The feeling of utter disgust with something/someone, at which point 'YERCH' should be screamed.
2. The noise one makes in the short time period before/after throwing up
3. A word to be shouted for comedic effect
4. A common mis-pronunciation for the word 'yeurch' as once said by an english teacher. Dumbass.
5. A replacement for the word 'gurn' which is not only a face-pulling contest, but a derrogative word for a black person.
guy -"check out my thumb, I cut it last night"