|a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.|
|a scrap or morsel of food left at a meal.|
prognathous prog·na·thous (prŏg'nə-thəs, prŏg-nā'-) or prog·nath·ic (prŏg-nāth'ĭk, -nā'thĭk)
Having jaws that project forward to a marked degree.