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.
Origin of SURGE. earlier, to ride (at anchor) probably in part from Middle French sourgir to cast anchor, land, from Catalan surgir to heave, cast anchor, from Latin surgere to rise, spring up; from sub-up + regere to lead straight; in part from Latin surgere â more at sub- , right.First Known Use: 1511.ull Definition of SURGE. intransitive verb. 1. 2. 3. : to slip around a windlass, capstan, or bitts âused especially of a rope. 4. 5. transitive verb. : to let go or slacken gradually (as a rope).