Definition of "blur"

blur

/ˈblɜː(ɹ)/

verb
third-person singular simple present blurs, present participle blurring, simple past and past participle blurred
1. To make indistinct or hazy, to obscure or dim.
2. To smear, stain or smudge.
3. (intransitive) To become indistinct.
4. To cause imperfection of vision in; to dim; to darken.
  Quotations
  His eyes are blurred with the lightning's glare.
  1819, Joseph Rodman Drake, The Culprit Fay
5. (obsolete, transitive) To sully; to stain; to blemish, as reputation.
  Quotations
  Sarcasms may eclipse thine own, / But cannot blur my lost renown.
  1662, [Samuel Butler], “[The First Part of Hudibras]”, in Hudibras. The First and Second Parts. […], London: […] John Martyn and Henry Herringman, […], published 1678; republished in A[lfred] R[ayney] Waller, editor, Hudibras: Written in the Time of the Late Wars, Cambridge: University Press, 1905
6. (graphical user interface, transitive) To transfer the input focus away from.
  Quotations
  Then give this box focus to blur the first one: […]
  2003, John Pollock, JavaScript: A Beginner's Guide, Second Edition, page 175
  These form elements need to have an onFocus event handler to blur the current focus.
  2001, Martin Webb, Michel Plungjan, Keith Drakard, Instant JavaScript, page 678
  Blurring one window and focusing on another window yields the same result of sending the window to the back of the pile.
  2007, Danny Goodman, JavaScript Bible, page 273
  A manual way to blur a text object is to press the Tab key, which advances focus to the next field in order and removes it from the current field (blurring it).
  2010, Chuck Easttom, Advanced JavaScript, page 329
7. (copyright law) To use a sign, image, expression, etc. sufficiently close to a trademarked one that it causes confusion between them.
noun
countable and uncountable, plural blurs
1. A smear, smudge or blot.
2. Something that appears hazy or indistinct.
  Quotations
  Maccario, it was evident, did not care to take the risk of blundering upon a picket, and a man led them by twisting paths until at last the hacienda rose blackly before them. Appleby could see it dimly, a blur of shadowy buildings with the ridge of roof parapet alone cutting hard and sharp against the clearing sky.
  1907, Harold Bindloss, chapter 26, in The Dust of Conflict‎
  Unfortunately, a small artificial pupil also tends to increase the amount of diffraction somewhat, but this increase in blur is considerably smaller than the decrease that results from the control of other factors.
  1978, Stanley Coren, Joan S. Girgus, Seeing Is Deceiving: The Psychology of Visual Illusions, Lawrence Erlbaum Associates, Inc., page 82
  The fightback when it came was in the [Roger] Federer fashion: unfussy, filled with classy strokes from the back with perfectly timed interventions at the net that confounded his opponent. The third set passed in a bit of a blur, the fourth, which led to the second tie-break, was the most dramatic of the match.
  2012 June 29, Kevin Mitchell, “Roger Federer back from Wimbledon 2012 brink to beat Julien Benneteau”, in The Guardian‎, archived from the original on 15 November 2016
  The second option (right-hand page) features a sharp background and a cyclist who appears as a smudge of blur.
  2014, Albrecht Rissler, Photographic Composition: Principles of Image Design, Rocky Nook, Inc.
  Selectively applying blur to the edges can give the impression of a toy camera or a tilt-shift lens.
  2016, Kat Sloma, Art with an iPhone: A Photographer’s Guide to Creating Altered Realities, Amherst Media
3. (obsolete) A moral stain or blot.
  Quotations
  […] with her raillyng sette a great blurre on myne honesty
  1548, Nicolas Udall, The first tome or volume of the Paraphrase of Erasmus vpon the newe testamente
adjective
comparative more blur, superlative most blur
1. (Malaysia, Singapore, informal) In a state of doubt or confusion.

Definition of "blur"

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adjective