Wiktionary
a. 1 (context entertainment English) That establishes rapport with an audience. 2 (context manufacturing of a rigid plastic foam English) That retains its shape after being cut by a blade or punched by a die. 3 (context computing English) Causing some action to occur when clicked with a mouse or other pointing device. n. (cx computing GUI English) Any element that can be clicked by the user.
Wikipedia
A clickable is any active area in a graphical user interface for a game or application that can be triggered or activated by the user, usually by a click of a mouse. This is the primary method of user interaction. The number of clickables is roughly proportional to the complexity of game play and the software itself. The term is originally attributed to the game and learning software developer Jonathan Stowe (1991).
Category:Graphical user interfaces
Usage examples of "clickable".
Maps help write fiction, trace a user's clickpath (replete with clickable web sites), capture Usenet and chat interactions (threads), plot search results (though Alta Vista discontinued its mapping service and Yahoo!
He smoothed his trembling fingers along its contours, seeking a clickable safety, but he found none.