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. (2006-07-09)