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| 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. |
aventurine
either of two gem minerals, one a plagioclase feldspar and the other quartz. Both have a sparkling reflection from oriented minute inclusions of mica or hematite.
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