1. Anything and everything; the pennultimate of the existence of the world embodied in one word used interchangebly as an interjection, adjective, noun, adverb, or other such device determined by inflection. Sometimes used as nom-nom, to display emotion; in ways similiar to the latin verb "ago" or the noun "res."
2. He was talking just like nom nom nom nom nom.
3. (anger) NOM-NOM!
4. (apathy) "Do you want to go to the store?" "Nom-nom."
5. That is the best nom in the whole world.