1. a protective coating applied to the underside of a vehicle to prevent rust and corrosion
Usage: automotive
2. a layer of paint or primer applied before the final coat
3. the soft, dense fur beneath the outer coat of certain animals
Usage: zoology

Examples

• The mechanic recommended applying undercoating to protect the new truck from winter salt damage.
• Make sure the undercoating is completely dry before applying the final paint layer.
• The dog’s thick undercoating keeps it warm in cold weather.
• Regular undercoating maintenance can extend a vehicle’s lifespan significantly.
• The painter applied two coats of undercoating before the color went on.
• Arctic foxes have dense undercoating that provides excellent insulation.