window
//ˈwɪndoʊ//
Noun
windowSingular
windowsPlural
1
An opening in a wall or roof of a building, vehicle, or container, fitted with glass in a frame to admit light or air and allow people to see out
She opened the window to let in some fresh air.
2
A transparent panel on an envelope to show an address
The envelope has a window so you can see the address inside.
3
A period of time during which an opportunity exists or an activity can take place
There is a short window of opportunity to apply for the scholarship.
4
A framed area on a computer screen for viewing information or running a program
You can open multiple windows on your computer at the same time.
5
A means of observing and learning about something
This book provides a window into ancient cultures.