/lun"deuhn/ , n.
1. Jack , 1876-1916, U.S. short-story writer and novelist.
2. a metropolis in SE England, on the Thames: capital of the United Kingdom.
3. City of , an old city in the central part of the former county of London: the ancient nucleus of the modern metropolis. 5400; 1 sq. mi. (3 sq. km).
4. County of , a former administrative county comprising the City of London and 28 metropolitan boroughs, now part of Greater London.
5. Greater . Also, Greater London Council . an urban area comprising the city of London and 32 metropolitan boroughs. 7,111,500; 609 sq. mi. (1575 sq. km).
6. a city in S Ontario, in SE Canada. 240,392.