geographical name Der·ry \ˈder-ē\

Definition of Derry

  1. 1 city in southeastern New Hampshire southeast of Manchester population 33,109

  2. 2 or Londonderry \ˌlən-dən-ˈder-ē; ˈlən-dən-ˌder-ē, -d(ə-)rē\play district of northwestern Northern Ireland bordering on the Republic of Ireland; established 1974 area 148 square miles (383 square kilometers), population 108,500

  3. 3 or Londonderry port on the Foyle River in northwestern Derry district, Northern Ireland population 62,697

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