Pronunciation: (ôr"u-nō'kō, ōr"-; Sp. ô"rē-nô'kô), [key]
a river in N South America, flowing N from the border of Brazil, along the E border of Colombia, and NE through Venezuela to the Atlantic. 1600 mi. (2575 km) long.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.