Londonderry

London·derry (-der′ē)

1. former county of NW Northern Ireland: c. 801 sq mi (2,075 sq km)
2. (-der′ē)
   district in NW Northern Ireland, in the E part of the former county: 148 sq mi (383 sq km); pop. 95,000
3. seaport in this district, on an inlet of the Atlantic Ocean: district pop. 95,000