To make indistinct and hazy in outline or appearance; obscure.
To smear or stain; smudge.
To lessen the perception of; dim: "For street children . . . drugs offer the chance to blur their hopeless poverty" (Alma Guillermoprieto).
To become indistinct.
To make smudges or stains by smearing.
A smear or blot; a smudge.
Something that is hazy and indistinct to the sight or mind.
[blur-ee] 
(blûr) 
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