Nouns

(n)undercoat, undersealseal consisting of a coating of a tar or rubberlike material on the underside of a motor vehicle to retard corrosion
(n)flat coat, ground, primer, priming, primer coat, priming coat, undercoatthe first or preliminary coat of paint or size applied to a surface
(n)undercoat, underfurthick soft fur lying beneath the longer and coarser guard hair

Verbs

(v)prime, ground, undercoatcover with a primer; apply a primer to