Date: 1200-1300
Language: Old Norse
Origin: vindauga, from vindr 'wind' + auga 'eye'


win‧dow S1 W1 [countable]
1DH a space or an area of glass in the wall of a building or vehicle that lets in light
open/close/shut a window
Do you mind if I open the window?
out of/from/through the window
She looked out of the window to see if it was raining.
The sun was shining through the windows.
in the window (=just inside a window)
We were looking at the Christmas displays in the shop windows.
bay window, dormer window, french windows, picture window, sash window
2TDTD one of the separate areas on a computer screen where different programs are operating
3 also window of opportunity a short period of time that is available for a particular activity:
Delay might open a window of opportunity for their rivals.
4 an area on an envelope with clear plastic in it which lets you see the address written on the letter inside the envelope

a window on/to the world

something that makes it possible to see and learn about what is happening in other parts of the world:
Television provides us with a useful window on the world.

go out (of) the window

informal to disappear completely or no longer have any effect:
One glass of wine, and all my good intentions went out the window.

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