Definition of Londonderry in US English:


proper noun

  • 1One of the Six Counties of Northern Ireland, formerly an administrative area.

    1. 1.1 The chief town of Londonderry, a city and port on the Foyle River near its outlet on the north coast; population 89,900 (est. 2009). It was formerly called Derry, a name still used by many. In 1613 it was granted to the City of London for colonization and became known as Londonderry.