Definition of whitewashes:
(n) :
(uncountable) A mixture of a powdered mineral substance (often slaked lime (containing calcium hydroxide), chalk (calcium carbonate), or both) and water which is used for painting surfaces such as fences and walls bright white.
(n) :
(countable, figurative) A thing used to hide mistakes, or to create an appearance of honesty, propriety, etc.; also (often politics), an act of hiding mistakes or creating an appearance of honesty, propriety, etc.; especially, a campaign, investigation, etc., which intentionally hides or overlooks unfavourable facts.
(n) :
(countable, figurative) (business) An act of clearing a person's debts, especially through a declaration of bankruptcy by a court.
(n) :
(countable, figurative) (sports, originally baseball) A complete victory or series of victories without suffering any losses; a clean sweep; also, a victory or series of victories by a very large margin.
(n) :
(uncountable, cooking) The most basic type of thickening agent, consisting of flour blended with water to make a paste.
(v) :
(transitive) To paint (a building, a wall, etc.) a bright white with whitewash (noun noun, sense 1).