Tai·myr Peninsula (t?-mîr?) See Taymyr Peninsula.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.Taimyr Peninsula (Russian taj?mir) n (Placename) a large peninsula of N central Russia, between the Kara Sea and the Laptev Sea. Also called: Taymyr Peninsula Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014Tai?myr? (or Tai?mir?) Penin?sula (ta??m??r) n. a peninsula in the N Russian Federation in Asia, between the Kara and Laptev seas. Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.