An area of the taskbar in Windows operating systems in which icons for some background applications, system options, and notifications are displayed, typically situated adjacent to the date and time.
Origin
1990s; earliest use found in PC Magazine.
Definition of system tray in US English:
system tray
noun
Computing
An area of the taskbar in Windows operating systems in which icons for some background applications, system options, and notifications are displayed, typically situated adjacent to the date and time.