whitewash
     n 1: a defeat in which the losing person or team fails to score
     2: wash consisting of lime and size in water; used for
        whitening walls and other surfaces
     3: a specious or deceptive clearing that attempts to gloss over
        failings and defects
     v 1: cover up a misdemeanor, fault, or error; "Let's not
          whitewash the crimes of Stalin"; "She tried to gloss
          over her mistakes" [syn: {gloss over}, {sleek over}, {hush
          up}]
     2: cover with whitewash; "whitewash walls"
     3: exonerate by means of a perfunctory investigation or through
        biased presentation of data
Source: WordNet® 2.0