n 1: seal consisting of a coating of a tar or rubberlike material
on the underside of a motor vehicle to retard corrosion
[syn: underseal]
2: the first or preliminary coat of paint or size applied to a
surface [syn: flat coat, ground, primer, priming, primer coat, 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]