Pronunciation: (toong-gOO'sku; Russ. tOOn-gOO'sku), [key]
any of three tributaries of the Yenisei River in the central Russian Federation in Asia: includes the Lower Tunguska 2000 mi. (3220 km) long; the Upper Tunguska or the lower course of the Angara; and the Stony Tunguska ab. 975 mi. (1570 km) long.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.