noun, verb ·Rare ·Advanced level

Definitions

Noun

1. 1
   A thick, resilient coating applied to the underbody or chassis of an automobile to protect against damage from small stones, etc, which would rapidly chip ordinary paint and allowing rusting to begin.
2. 2
   seal consisting of a coating of a tar or rubberlike material on the underside of a motor vehicle to retard corrosion wordnet

Verb

1. 1
   To coat (the underbody or chassis of a vehicle) with underseal. transitive

Synonyms

All synonyms

undercoatundercoat

Etymology

From under- + seal.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.