Mark·ham (mär?k?m), Beryl 1903-1986. British aviation pioneer who was the first person to fly solo across the Atlantic Ocean from east to west (1936).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.Markham (?m??k?m) n (Placename) Mount Markham a mountain in Antarctica, in Victoria Land. Height: 4350 m (14 272 ft)Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014Mark?ham (?m?r k?m) n. 1. Mount, a mountain in Antarctica, SW of the Ross Sea. 15,100 ft. (4600 m). 2. a town in SE Ontario, in S Canada. 153,811. Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.