a republic on the W coast of Africa, between Guinea and Senegal: formerly a Portuguese overseas province; gained independence in 1974. 1,178,584; 13,948 sq. mi. (36,125 sq. km). Capital:Bissau.
Bis·sau (bĭ-sou') The capital and largest city of Guinea-Bissau, on an estuary of the Atlantic Ocean. Founded by the Portuguese in 1687, the city has been a free port since 1869. Population: 388,000.