whitewash

v. paint walls with whitewash; cover up, mask (sin, a defect, etc.); defeat decisively (Sports)

n. watery lime solution for making walls white; cover up, masking (of sin, a defect, etc.); overwhelming defeat (Sports)

Whitewash, or calcimine, kalsomine, or calsomine is a type of inexpensive paint made from slaked lime (calcium hydroxide) and chalk (whiting). Other additives have historically included water glass, glue, egg white, Portland cement, salt,  soap, milk or flour. Whitewash cures through a reaction with carbon dioxide in the atmosphere to form calcium carbonate in the form of calcite, a reaction known as carbonatation.It is usually applied externally (as Tom Sawyer was made to do to a fence in Mark Twain's The Adventures of Tom Sawyer). Occasionally it is colored and used on interiors, such as the hallways of apartment buildings. Whitewash is especially effective on adobe-like materials because it is absorbed easily and the resultant chemical reaction hardens the substrate.
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Noun
1. a defeat in which the losing person or team fails to score
(hypernym) defeat, licking
2. wash consisting of lime and size in water; used for whitening walls and other surfaces
(hypernym) wash
3. a specious or deceptive clearing that attempts to gloss over failings and defects
(hypernym) clearing
(derivation) gloss over, sleek over, hush up
Verb
1. cover up a misdemeanor, fault, or error; "Let's not whitewash the crimes of Stalin"; "She tried to gloss over her mistakes"
(synonym) gloss over, sleek over, hush up
(hypernym) cover, cover up
2. cover with whitewash; "whitewash walls"
(hypernym) wash
(hyponym) calcimine
3. exonerate by means of a perfunctory investigation or through biased presentation of data
(hypernym) acquit, assoil, clear, discharge, exonerate, exculpate

(v. t.)
To make white; to give a fair external appearance to; to clear from imputations or disgrace; hence, to clear (a bankrupt) from obligation to pay debts.
  

(v. t.)
To apply a white liquid composition to; to whiten with whitewash.
  

(n.)
Any wash or liquid composition for whitening something, as a wash for making the skin fair.
  

(n.)
A composition of line and water, or of whiting size, and water, or the like, used for whitening walls, ceilings, etc.; milk of lime.
  

To dream that you are whitewashing, foretells that you will seek to reinstate yourself with friends by ridding yourself of offensive habits and companions.

For a young woman, this dream is significant of well-laid plans to deceive others and gain back her lover who has been estranged by her insinuating bearing toward him.