undercoat

(noun, verb)

noun

1. seal consisting of a coating of a tar or rubberlike material on the underside of a motor vehicle to retard corrosion

Similar word(s): underseal

Definition categories: man–made, seal

2. the first or preliminary coat of paint or size applied to a surface

Similar word(s): ground, primer, priming

Definition categories: man–made

3. thick soft fur lying beneath the longer and coarser guard hair

Similar word(s): underfur

Definition categories: animal, fur

verb

1. cover with a primer; apply a primer to

Similar word(s): ground, prime

Definition categories: contact, paint