capital of Portugal - capital and largest city and economic and cultural center of Portugal; a major port in western Portugal on Tagus River where it broadens and empties into the Atlanticport - a place (seaport or airport) where people and merchandise can enter or leave a country Portugal, Portuguese Republic - a republic in southwestern Europe on the Iberian Peninsula; Portuguese explorers and colonists in the 15th and 16th centuries created a vast overseas empire (including Brazil) |