As a Noun: 1. A shape or area which you cannot see clearly because it has no distinct outline or because it is moving very fast. English = blur. As a Verb or Adjective: 1. To have edges that are no longer distinct and to be unable to be seen clearly. English = (be) blurred, (be) blurry. 2. To make something impossible to see clearly by making its edges no longer distinct. English = blur. 3. Of television reception, to be not very good so that the picture is not clear or sharp.