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| a scrap or morsel of food left at a meal. |
| 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 largest library in the United States, located in Washington, D.C., and maintained largely by federal appropriations. Its original purpose was to provide research facilities for members of Congress; today it serves the public as well. Most copyrighted publications are catalogued by the Library of Congress, whose classification system is used by major libraries around the country.