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undercoating

American  
[uhn-der-koh-ting] / ˈʌn dərˌkoʊ tɪŋ /

noun

  1. a protective seal applied to the underside of an automobile to reduce corrosion and vibration.

Etymology

Origin of undercoating

First recorded in 1920–25; undercoat + -ing 1

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.