Definition of "Congo"

Congo, Democratic Republic of the Congo (a country in Central Africa, larger and to the east of the Republic of the Congo; official name: Democratic Republic of the Congo; capital: Kinshasa).  examples

Congo, Republic of the Congo (a country in Central Africa, smaller and to the west of the Democratic Republic of the Congo; official name: Republic of the Congo; capital: Brazzaville).  examples

A region of Central Africa, comprising the Democratic Republic of the Congo and the Republic of the Congo.  examples

A large river in Africa which flows for about 4,380 km (2,720 miles) to the Atlantic Ocean in the Democratic Republic of Congo.  examples

(informal) Congregationalist  examples