wheel·chair (w?l?châr?, hw?l?-)n. A chair mounted on large wheels, used primarily by people who cannot walk or have difficulty walking.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.wheelchair (?wi?l?t???) n (Medicine) med a special chair mounted on large wheels, for use by invalids or others for whom walking is impossible or temporarily inadvisableCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014wheel?chair (??wil?t???r, ?wil-) n. a chair mounted on wheels for use by persons who cannot walk. [1690?1700] Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.