a large flap behind a rear tire to prevent mud, water, etc., from being splashed on the following vehicle.
Origin of splash guard
First recorded in 1925–30
Also called mudguard, mud flap.
Origin of mudguard
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
a curved part of a motorcycle, bicycle, etc, attached above the wheels to reduce the amount of water or mud thrown up by themUS and Canadian name: fender
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Online Etymology Dictionary, © 2010 Douglas Harper