window
US /ˈwɪn.doʊ/
UK /ˈwɪn.doʊ/

1.
2.
a period of time during which something can be done
:
•
There's a small window of opportunity to invest in this stock.
•
The launch has a window of three hours.
1.
to provide a building or room with windows
:
•
The architect decided to window the entire front facade for more natural light.
•
They plan to window the new extension to maximize views.