Meaning of “window” - Learner’s Dictionary

window

noun [ C ] us uk /ˈwɪndəʊ/
Extra Examples
She opened the window and stuck her head out.Sorry, I couldn't get the window to shut properly.They must have got in through the bathroom window.I've measured all the windows.I sleep best with the windows open.
GLASS

A1 a space in the wall of a building or vehicle that has glass in it, used for letting light and air inside and for looking through:

Open the window if you're too hot.
I could see the children's faces at the window.
a window frame/ledge
COMPUTER

B1 a separate area on a computer screen showing information and which you can move around:

to minimize/maximize a window
→ See also French windows

(Definition of “window” from the Cambridge Learner’s Dictionary © Cambridge University Press)