n.
- an opening in a wall or roof, fitted with glass in a frame to admit light or air and allow people to see out.
▸an opening through which customers are served in a bank, ticket office, etc.
▸a space behind the window of a shop where goods are displayed.
▸
(a window on/into/to)
a means of observing and learning about.
- a transparent panel in an envelope to show an address.
- Computing a framed area on a display screen for viewing information.
- an interval or opportunity for action.
- Physics 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.
[military code word.]
Phrase
- go out
(of)
the window
informal (of a plan or behaviour) be abandoned or cease to exist. - windows of the soul
the eyes.
Derivative
- windowed adj.
- windowless adj.
Etymology
ME: from ON vindauga, from vindr ‘wind’ + auga ‘eye’.