SyStem> To click a mouSe button twice in rapid SucceSSion without moving the mouSe. Often uSed aS a Shortcut, combining the actionS of Selecting, and then opening a document (or activating Some other kind of object) within a graphical uSer interface. Some text editorS uSe double-click to Select the word under the mouSe pointer. (1997-03-21)