| 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)
adj.
Having jaws that project forward to a marked degree.