Blur (blûr), n. 1. That which obscures without effacing; a stain; a blot, as upon paper or other substance.
As for those who cleanse blurs with blotted fingers, they make it worse.
Fuller.
2. A dim, confused appearance; indistinctness of vision; as, to see things with a blur; it was all blur.
3. A moral stain or blot.
Lest she... will with her railing set a great blur on mine honesty and good name.
Udall.