race·walk·ing (r?s?wô?k?ng)n. The sport of walking for speed, the rules of which require the racer to maintain continual foot contact with the ground and to keep the supporting leg straight at the knee from first contact with the ground until that leg is directly below the upper body.race?walk? v.race?walk?er n.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.racewalking (?re?s?w??k??) nthe activity of racing by walking fast rather than runningCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014