• To apply a base coat of plaster.
  • The setting process of base-coat plaster, which darkens to a brown hue as it dries.
  • A partial loss of electrical power that dims lights. A brownout is less severe than a blackout.


  • A temporary reduction in the AC power arriving from a power line. It may be due to unusually heavy power demands, a malfunction of the generation or distribution system, or it may be done intentionally by the power company to counter excessive demand. It usually goes unnoticed by power consumers, except when it affects sensitive electronic equipment, such as computers. Also called power brownout.