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American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Placename) See Tunguska
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
any of three tributaries (Lower Tunguska, Stony Tunguska, and Upper Tunguska) of the Yenesei River in the central Russian Federation in Asia.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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|Noun||1.||Upper Tunguska - a river in southeastern Siberia that flows northwest from Lake Baikal to become a tributary of the Yenisei River|
Siberia - a vast Asian region of Russia; famous for long cold winters
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