to render obscure by making the form or outline of confused and uncertain, as by soiling; to smear; to make indistinct and confused; as, to blur manuscript by handling it while damp; to blur the impression of a woodcut by an excess of ink.-to cause imperfection of vision in; to dim; to darken.-to sully; to stain; to blemish, as reputation.-that which obscures without effacing; a stain; a blot, as upon paper or other substance.-a dim, confused appearance; indistinctness of vision; as, to see things with a blur; it was all blur.-a moral stain or blot.