nigerien Definition

river 2600 miles (4184 kilometers) long in western Africa flowing north from the Fouta Djallon region in Guinea, northeast through Mali, and southeast through Niger, then forming the border between Niger and Benin, and finally flowing southeast then south through Nigeria and into the Gulf of Guinea

landlocked country just south of the Tropic of Cancer in western Africa which was a territory of French West Africa until 1958 and is currently a republic; capital Niamey area 489,191 square miles (1,267,000 square kilometers), population 19,866,000