<p><strong>Noun:</strong></p><ul><li>Jack, 1876–1916, U.S. short-story writer and novelist.</li><li>a metropolis in SE England, on the Thames: capital of the United Kingdom.</li><li>City of, an old city in the central part of the former county of London: the ancient nucleus of the modern metropolis. 1 sq. mi. (3 sq. km).</li><li>County of, a former administrative county comprising the City of London and 28 metropolitan boroughs, now part of Greater London.</li><li>Greater. Also Greater London Council. an urban area comprising the city of London and 32 metropolitan boroughs. 609 sq. mi. (1,575 sq. km).</li><li>a city in S Ontario, in SE Canada.</li></ul>