A twitter profile widget that pushes tweets into a box on a webpage. If you follow the link you can make your own twitter widget.
In computer programming, a widget (or control) is an element of a graphical user interface (GUI) that displays an information arrangement changeable by the user, such as a window or a text box. The defining characteristic of a widget is to provide a single interaction point for the direct manipulation of a given kind of data. In other words, widgets are basic visual building blocks which, combined in an application, hold all the data processed by the application and the available interactions on this data. Read more : http://en.wikipedia.org/wiki/GUI_widget.