1 [uncountable and countable] a report or examination of events that hides the true facts about something so that the person who is responsible will not be punished [= cover-up]:
The official report into the cause of the fire was labeled a whitewash.
The official report into the cause of the fire was labeled a whitewash.2 [uncountable]DHH a white liquid mixture used especially for painting walls
3 [countable] an occasion in sport when one player or team defeats an opponent easily, without the opponent getting any points, goals etc

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