Cornwall

[kawrn-wawl or, esp. British, -wuh l] /ˈkɔrn wɔl or, esp. British, -wəl/
noun
1.
a county in SW England. 1369 sq. mi. (3545 sq. km).
2.
a city in SE Ontario, in S Canada, SW of Ottawa, on the St. Lawrence.
British Dictionary definitions for Cornwall

Cornwall

/ˈkɔːnˌwɔːl; -wəl/
noun
1.
a former administrative county of SW England; became a unitary authority in 2009: hilly, with a deeply indented coastline. Administrative centre: Truro. Pop: 513 500 (2003 est). Area: 3564 sq km (1376 sq miles)
Word Origin and History for Cornwall

Old English Cornwalas (891), Cornubia (c.705), "the Corn Welsh," from original Celtic tribal name, *Cornowii, Latinized as Cornovii, literally "peninsula people, the people of the horn" (from Celtic kernou "horn," hence "headland"), in reference to the long "horn" of land on which they live, to which the Anglo-Saxons added the plural of Old English walh "stranger, foreigner," especially if Celtic (see Welsh).