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A lake of southeast Ontario, Canada, between the Ottawa River and Georgian Bay.
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) Lake Nipissing a lake in central Canada, in E Ontario between the Ottawa River and Georgian Bay. Area: 855 sq km (330 sq miles)
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
Nip•is•sing(ˈnɪp ə sɪŋ)
a lake in SE Canada, in Ontario, N of Georgian Bay. 330 sq. mi. (855 sq. km).
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.