Emphasis on Juba, juba, Jubba. Juba |ˈdʒuːbə| the capital of the southern region of Sudan, on the White Nile; pop. 250,000 (est. 2005). juba |ˈdʒuːbə| a dance originating among plantation slaves in the southern US, featuring rhythmic hand-clapping and slapping of the thighs. Jubba |ˈdʒʊbə, ˈdʒuːbə| a river in East Africa, rising in the highlands of central Ethiopia and flowing southwards for about 1,600 km (1,000 miles) through Somalia to the Indian Ocean.All Rights Reserved