Whitewash

noun
1.
a composition, as of lime and water or of whiting, size, and water, used for whitening walls, woodwork, etc.
2.
anything, as deceptive words or actions, used to cover up or gloss over faults, errors, or wrongdoings, or absolve a wrongdoer from blame.
3.
Sports Informal. a defeat in which the loser fails to score.
verb (used with object)
4.
to whiten with whitewash.
5.
to cover up or gloss over the faults or errors of; absolve from blame.
6.
Sports Informal. to defeat by keeping the opponent from scoring:
The home team whitewashed the visitors eight to nothing.
noun
1.
a substance used for whitening walls and other surfaces, consisting of a suspension of lime or whiting in water, often with other substances, such as size, added
2.
(informal) deceptive or specious words or actions intended to conceal defects, gloss over failings, etc
3.
(informal) a defeat in a sporting contest in which the loser is beaten in every match, game, etc in a series: they face the prospect of a whitewash in the five-test series
verb (transitive)
4.
to cover or whiten with whitewash
5.
(informal) to conceal, gloss over, or suppress
6.
(informal) to defeat (an opponent or opposing team) by winning every match in a series
white stuff