noun
window
WIHN-doh
noun
1
An opening in a wall, usually fitted with glass, that lets in light and air.
"She opened the window to let in some fresh air."
"Rain streaked down the office window all afternoon."
2
A limited period during which something is possible or available.
"There's only a small window to submit your application."
3
A rectangular area on a computer screen displaying an app or task.
"He had six browser windows open at once."
How to Use Window
Learner’s notesIn plain EnglishA glass opening in a wall, a limited timeframe for doing something, or a screen panel in software.
Common pairings
open a window
a window of opportunity
browser window
Word Forms
windowed past tense, windows plural, windows singular
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She opened the _____ to let in some fresh air.
Etymology
From Old Norse vindauga, literally "wind-eye" — an opening that let wind (and light) into a building, before glass panes were common.