Throbber. (n.d.). In YourDictionary. Retrieved from https://www.yourdictionary.com/throbber
throbber - Computer Definition
An animated icon that notifies the user that an operation is taking place in the background, such as when an application is loading or a Web page is downloading. Typically a spinning ball, logo or bar, throbbers are often animated GIF or AVI files. See animated GIF and AVI.