<p><strong>Noun</strong></p><ul><li>An opening in the wall of a building, the side of a vehicle, etc., for the admission of air or light, or both, commonly fitted with a frame in which are set movable sashes containing panes of glass.</li><li>Such an opening with the frame, sashes, and panes of glass, or any other device, by which it is closed.</li><li>The frame, sashes, and panes of glass, or the like, intended to fit such an opening.</li><li>A windowpane.</li><li>Anything likened to a window in appearance or function, as a transparent section in an envelope, displaying the address.</li><li>A period of time regarded as highly favorable for initiating or completing something: Investors have a window of perhaps six months before interest rates rise.</li><li>Military: Chaff.</li><li>Geology: Fenster.</li><li>Pharmacology: The drug dosage range that results in a therapeutic effect, a lower dose being insufficient and a higher dose being toxic.</li><li>Aerospace: Launch window; a specific area at the outer limits of the earth's atmosphere through which a spacecraft must reenter to arrive safely at its planned destination.</li><li>Computers: A section of a display screen that can be created for viewing information from another part of a file or from another file: The split screen feature enables a user to create two or more windows.</li></ul><p><strong>Verb</strong></p><ul><li>(used with object) To furnish with a window or windows.</li><li>Obsolete: To display or put in a window.</li></ul><p><strong>End of Response</strong></p>