1. Openings in a building to provide illumination, originally animal skin, now generally glass but occasionally perspex.
2. Microsoft Windows is a group of several proprietary graphical operating system families developed and marketed by Microsoft. Each family caters to a certain sector of the computing industry. For example, Windows NT for consumers, Windows Server for servers, and Windows IoT for embedded systems. Arch malefactor Bill Gates is credited with the invention of Windows however this is a blatant lie. WIMPS (Windows, Icons, Mouse & Pull down Menus) environments were in existence while Bill Gates was geeking it up in his dorm room. Companies such as Rank Xerox, AT&T and Apple implemented WIMPS software years before Bill Gates had even stolen and rebranded CPM.