A function key is a key on a computer or terminal keyboard which can be programmed so as to cause an operating system command interpreter or application program to perform certain actions, a form of soft key. On some keyboards/computers, function keys may have default actions, accessible on power-on.
Surge definition, a strong, wavelike, forward movement, rush, or sweep: the onward surge of an angry mob. See more.
a strong, wavelike, forward movement, rush, or sweep: the onward surge of an angry mob. a strong, swelling, wavelike volume or body of something: a billowing surge of smoke. a sudden, strong increase or burst: a surge of energy; surges of emotion.