way·side (w??s?d?)n. The side or edge of a road, way, path, or highway.adj. Situated at or near the side of a road, way, path, or highway: a wayside inn.Idioms: fall by the wayside1. To fail to continue; give up.2. To be set aside or discarded because of other considerations. go by the wayside To be set aside or discarded because of other considerations.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.wayside (?we??sa?d) n1. (Automotive Engineering) a. the side or edge of a roadb. (modifier) situated by the wayside: a wayside inn. 2. fall by the wayside to cease or fail to continue doing something: of the nine starters, three fell by the wayside. 3. go by the wayside to be put aside on account of something more urgentCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014way?side (?we??sa?d) n. 1. the side of the way; land immediately adjacent to a road, highway, etc.; roadside. adj. 2. located at or along the wayside: a wayside inn. [1350?1400] Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.