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window noun [ ˈwɪndəʊ ]

• an 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.
Similar: casement, opening, aperture,
• a transparent panel on an envelope to show an address.
• a framed area on a display screen for viewing information.
• an interval or opportunity for action.
• "the parliamentary recess offers a good window for a bid"
• a range of electromagnetic wavelengths for which a medium (especially the atmosphere) is transparent.
• strips of metal foil dispersed in the air to obstruct radar detection.
Origin: Middle English: from Old Norse vindauga, from vindr ‘wind’ + auga ‘eye’.

go out the window

• (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

• the eyes.



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