window

win·dow

noun, often attributive \ˈwin-(ˌ)dō\

Definition of WINDOW

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 (as glass) and capable of being opened and shut b : windowpane 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 (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 (as a shutter or sash with its fittings) that closes a window opening

6

: chaff 4

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

— win·dow·less \-dō-ləs, -də-\ adjective

— out the window

: out of existence, use, or consideration

Examples of WINDOW

1. She opened a window to let in some air.
2. I looked out the window and saw a deer.
3. He used vinegar and water to wash the windows.
4. He accidentally broke a window.
5. Can you roll down the car window?
6. The windows along 5th Avenue were all decorated for Christmas.
7. I saw a beautiful dress in the window.
8. He sits behind a window and sells movie tickets.
9. Make sure the address shows through the window in the envelope.
10. A window opened in the fog and we could finally see the ocean.

Origin of WINDOW

Middle English windowe, from Old Norse vindauga, from vindr wind (akin to Old English wind) + auga eye; akin to Old English ēage eye — more at eye

First Known Use: 13th century

Other Building Terms

batten, cistern, hearth, lath, transom, wainscot