[luhn-duh
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. |