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.
swell verb [I/T] (INCREASE). âº to âbecome âlarger and ârounder: [I] Itâs âspring, and the âbuds on the âtrees are âbeginning to swell. [I] One of his âeyes swelled âshut. [T] Immigrants swelled the cityâs âpopulation (= âincreased it). [I] fig.