blurとは何ですか?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.