Valparaíso /ˌvɑl.pɑ.ɹaɪˈiː.soʊ/ noun3 •A city and port, the capital of the Valparaíso region, Chile, known for its steep cliffs, home of the national congress, and its funicular railways traveling up these cliffs. •A region of Chile; in full, Valparaíso Region. •A province in Chile.