double-click (operating system) Two clicks of a mouse button made in rapid succession without moving the mouse. A double-click often combines the actions of selecting, and then activating an object in a GUI, e.g. selecting and opening a document. Some text editors use double-click to select the word under the mouse pointer.
When used as a verb it is often written as two words with a space instead of a hyphen. Last updated: 2006-07-09