window
noun
win·dow
ˈwin-(ˌ)dō 
often attributive
1
a
: an opening especially in the wall of a building for admission of light and air that is usually closed by casements or sashes containing transparent material (such as glass) and capable of being opened and shut
b
c
: a space behind a window of a retail store containing displayed merchandise
d
: an opening in a partition or wall through which business is conducted
a bank teller's window
2
: a means of entrance or access
especially
: a means of obtaining information
a window on history
3
: an opening (such as a shutter, slot, or valve) that resembles or suggests a window
4
: the transparent panel or opening of a window envelope
5
: the framework (such as a shutter or sash with its fittings) that closes a window opening
6
7
: a range of wavelengths in the electromagnetic spectrum to which a planet's atmosphere is transparent
8
a
: an interval of time within which a rocket or spacecraft must be launched to accomplish a particular mission
b
: an interval of time during which certain conditions or an opportunity exists
a window of vulnerability
9
: an area at the limits of the earth's sensible atmosphere through which a spacecraft must pass for successful reentry
10
: any of various rectangular boxes appearing on a computer screen that display files or program output, that can usually be moved and resized, and that facilitate multitasking
Examples of window in a Sentence
She opened a window to let in some air.
I looked out the window and saw a deer.
He used vinegar and water to wash the windows.
He accidentally broke a window.
Can you roll down the car window?
The windows along 5th Avenue were all decorated for Christmas.
I saw a beautiful dress in the window.
He sits behind a window and sells movie tickets.
Make sure the address shows through the window in the envelope.
A window opened in the fog and we could finally see the ocean.
Recent Examples on the Web
Face retouching tools are conveniently accessible in the Face Swap window.
—
PCMAG, 12 Nov. 2024
But the window was extended by a lack of dead balls after Jokic went to the scorer’s table, and Denver stole back five consecutive points from Watson and Strawther.
—Bennett Durando, The Denver Post, 10 Nov. 2024
Later, Robert will reconvene with his wife at their boy’s bedside, the sun flooding gorgeously through the window over Nick’s shoulder.
—Amanda Whiting, Vulture, 8 Nov. 2024
The 11 accommodations, spread across three buildings, have their own themes but are tied together by commonalities like rich woodwork, fireplaces, stained glass windows and original art.
—Catherine Garcia, theweek, 7 Nov. 2024
See all Example Sentences for window 
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
PCMAG, 12 Nov. 2024
But the window was extended by a lack of dead balls after Jokic went to the scorer’s table, and Denver stole back five consecutive points from Watson and Strawther.
—Bennett Durando, The Denver Post, 10 Nov. 2024
Later, Robert will reconvene with his wife at their boy’s bedside, the sun flooding gorgeously through the window over Nick’s shoulder.
—Amanda Whiting, Vulture, 8 Nov. 2024
The 11 accommodations, spread across three buildings, have their own themes but are tied together by commonalities like rich woodwork, fireplaces, stained glass windows and original art.
—Catherine Garcia, theweek, 7 Nov. 2024
See all Example Sentences for window
Dictionary Entries Near window
Cite this Entry
“Window.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/window. Accessed 22 Nov. 2024.
Copy CitationKids Definition
window
noun
win·dow
ˈwin-dō
1
: an opening in a wall for letting in light or air
2
3
: an opening in a partition or wall through which business is conducted
a bank teller's window
4
: a period of time during which a certain condition exists
a window of opportunity
5
: any of the areas into which a computer display may be divided and on which distinctly different types of information are displayed
windowless
adjective
Etymology
from early Norse vindauga, literally "wind's eye," from vindr "wind" and auga "eye"
Word Origin
The English word window comes from an early Norse word vindauga. Vindauga was formed by a combination of vindr, meaning "wind," and auga, meaning "eye." Vindauga could be translated as "wind's eye." A window can be thought of as an eye, or hole, through which the wind can enter.
Medical Definition
window
noun
win·dow
ˈwin-(ˌ)dō, -də(-w)
1
2
: a small surgically created opening : fenestra sense 2a
3
: a usually narrow interval of time or range of values for which a certain condition or an opportunity exists
coma and multiorgan failure can occur within hours and there may be a very narrow window of opportunity for transplantation—J. P. A. Lodge
see therapeutic window
J. P. A. LodgeLove words? Need even more definitions?
Merriam-Webster unabridged
Share