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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 fool or simpleton; ninny. |
board certification n.
The process by which a person is tested and approved to practice in a specialty field, especially medicine, after successfully completing the requirements of a board of specialists in that field. For a physician, board certification is required in order to practice in a hospital.