undercoat

n 1: a coating of a tar or rubber-based material on the underside

of a motor vehicle to retard corrosion [syn: {underseal}]

2: the first coat of paint applied to a surface [syn: {flat

coat}, {ground}, {primer}, {priming coat}]

3: thick soft fur lying beneath the longer and coarser guard

hair [syn: {underfur}]

v : cover with a primer; apply a primer to [syn: {prime}, {ground}]