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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. |
| the offspring of a zebra and a donkey. |
aureus
basic gold monetary unit of ancient Rome and the Roman world. It was first named nummus aureus ("gold money"), or denarius aureus, and was equal to 25 silver denarii; a denarius equaled 10 bronze asses. (In 89 BC, the sestertius, equal to one-quarter of a denarius, replaced the bronze ass as a unit of account.) In Constantine's reform of AD 312, the aureus was replaced by the solidus as the basic monetary unit
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