<p><strong>Verb</strong></p><ul><li>to obscure or sully (something) by smearing or with a smeary substance: The windows were blurred with soot.</li><li>to obscure by making confused in form or outline; make indistinct: The fog blurred the outline of the car.</li><li>to dim the perception or susceptibility of; make dull or insensible: The blow on the head blurred his senses.</li></ul><p><strong>Noun</strong></p><ul><li>a smudge or smear that obscures: a blur of smoke.</li><li>a blurred condition; indistinctness: They could see nothing in the foggy blur.</li><li>something seen indistinctly: The ship appeared as a blur against the horizon.</li></ul>