The phrase "arrow icon" refers to a small graphic representation of an arrow, often used in computer programs or websites to indicate direction or navigation. Full definition
These applications often launch at startup and stay running in the background but remain hidden behind the up arrow icon at the bottom - right corner of your screen. (howtogeek.com)
The double arrow icon beside this offers a range of filters and effects. (techradar.com)
To reveal the drawer, users simply swipe up on the bar, or press a small arrow icon just above the launcher. (mobilesyrup.com)