n.
locally and historically Derry
District (pop., 2001: 105,066), northwestern Northern Ireland.
It is also the name of a former traditional county, colonized by the English in 1609; the 1973 administrative reorganization broke up the county into several districts, including Londonderry. Bordered by the Irish republic and Lough Foyle, it is centred around the seaport city of Londonderry . In 1969 the old city and the adjacent area were merged administratively, and in 1973 it became one of Northern Ireland's 26 districts.