Oxford English Dictionary

noun

• 1an opening in the wall or roof of a building or vehicle, fitted with glass in a frame to admit light or air and allow people to see out.
•  a pane of glass filling a window:thieves smashed a window and took £600
•  an opening in a wall or screen through which customers are served in a bank, ticket office, or similar building.
•  a space behind the window of a shop where goods are displayed for sale:[as modifier]:beautiful window displays
•  a means of observing and learning about something:television is a window on the world

• 2a transparent panel on an envelope to show an address.

• 3 Computing a framed area on a display screen for viewing information.

• 4an interval or opportunity for action:the parliamentary recess offers a good window for a bid
•  an interval during which atmospheric and astronomical circumstances are suitable for the launch of a spacecraft.

• 5 Physics a range of electromagnetic wavelengths for which a medium (especially the atmosphere) is transparent.

• 6 [mass noun] strips of metal foil dispersed in the air to obstruct radar detection.

  [military code word

  
  

  
  

  Phrases  go out (of) the window informal (of a plan or pattern of behaviour) no longer exist; disappear: all pretence at unity went out of the window as cabinet colleagues traded insults window of opportunity a favourable opportunity for doing something that must be seized immediately. window of vulnerability an opportunity to attack something that is at risk (especially as a cold war claim that America’s land-based missiles were easy targets for a Soviet first strike). the windows of the soul literary the eyes. Derivatives  windowless adjective

  
  

  
  

  
  

  
  

  

  
  

  
  

  
  

  
  

  
  

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