pɹaɪ̯m ˈpɹaɪ.mə(ɹ) ˈpɹɪ.mɚ ˈpɹaɪmɪŋ cover with a primer; apply a primer to thick soft fur lying beneath the longer and coarser guard hair the first or preliminary coat of paint or size applied to a surface seal consisting of a coating of a tar or rubberlike material on the underside of a motor vehicle to retard corrosion