—v. (blurred, blurring)
1 tr. & intr. make or become unclear or less distinct.
2 tr. smear; partially efface.
3 tr. make (one's memory, perception, etc.) dim or less clear.
—n. something that appears or sounds indistinct or unclear.
Derivatives:
blurry adj. (blurrier, blurriest).
Etymology: 16th c.: perh. rel. to BLEAR
Useful english dictionary. 2012.