Definition: "Windows 2000" refers to a specific operating system version in Windows, which was released by Microsoft in October, 1985. It became widely used for Windows computers worldwide. In its most basic form, "Windows 2000" is a user interface (UI) that allows users to interact with the computer. This includes managing tasks such as opening programs and sharing information. The "2000" stands for "Basic" because it was designed originally for simple, easy-to-use software applications. It does not include advanced features like graphical user interfaces or multimedia capabilities. The most recent version of "Windows 2000," Windows Server 2016, is a major upgrade that introduced new features and capabilities.