a protective seal applied to the underside of an automobile to reduce corrosion and vibration.
Origin of undercoating
verb (used with object)
Origin of undercoat
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
(tr) to apply an undercoat to (a surface)
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