In a Graphical User Interface on an iMac, the object that can be clicked on the dock to launch an application is called an icon.
Referring to a Graphical User Interface (GUI) on an iMac, the object at the iMac's dock that can be clicked to launch an application is named an icon. The dock serves as a primary method of launching applications and managing open applications and documents. An icon represents applications, files, and other operations that can be easily accessed by users.