| 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. |
extinguish ex·tin·guish (ĭk-stĭng'gwĭsh)
n. ex·tin·guished, ex·tin·guish·ing, ex·tin·guish·es
To bring about the extinction of a conditioned response.