|a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.|
|a gadget; dingus; thingumbob.|
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.