"Holiday: Any discontinuity, bare, or thin spot in a painted area."
http://www.cohesantmaterials.com/Portals/2/PDFs/ProtectCtgsG...
http://www.itwresintech.com/pdf/library/gloss.pdf


"Holidays: Application defect whereby small areas are left uncoated. Syn: Misses, Skips, Voids, Discontinuities, Vacations."
http://www.hytechsales.com/glossary.html

"I will take a month off from discussing thermal analysis and turn to a group of paint application problems that often are lumped together under the label of holidays, namely coating discontinuities, thin spots, voids, pinholes, and porosity. Such defects can hurt the appearance of the coating, but even more important is the loss of integrity so that the coating no longer protects the substrate against corrosion or other damage. In the case of coatings on the interiors of food and beverage cans, holidays can lead to contamination of the contents of the can leading to color and taste changes. Holidays testing should be part of quality control on the job or in a customer's plant, but it also..."
http://www.amazon.com/Coatings-Clinic-holidays-detection-Coa...