- a republic in NW Africa: formerly part of French West Africa. 458,976 sq. mi. (1,188,748 sq. km). Capital: Niamey.
- a river in W Africa, rising in S Guinea, flowing NE through Mali, and then SE through Nigeria into the Gulf of Guinea. 2,600 miles (4,185 km) long.
- a landlocked republic in West Africa: important since earliest times for its trans-Saharan trade routes; made a French colony in 1922 and became fully independent in 1960; exports peanuts and livestock. Official language: French. Religion: Muslim majority. Currency: franc. Capital: Niamey. Pop: 16 899 327 (2013 est). Area: 1 267 000 sq km (489 000 sq miles)
- a river in West Africa, rising in S Guinea and flowing in a great northward curve through Mali, then southwest through Niger and Nigeria to the Gulf of Guinea: the third longest river in Africa, with the largest delta, covering an area of 36 260 sq km (14 000 sq miles). Length: 4184 km (2600 miles)
- a state of W central Nigeria. Capital: Minna. Pop: 3 950 249 (2006). Area: 76 363 sq km (29 476 sq miles)
