Meaning of the word "function key" in English

What does "function key" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

function key

US /ˈfʌŋk.ʃən ˌkiː/
UK /ˈfʌŋk.ʃən ˌkiː/
"function key" picture

Noun

a button on a computer keyboard, distinct from the main alphanumeric keys, that can be programmed to perform specific tasks

Example:
You can press the function key F5 to refresh the web page.
On many laptops, you need to hold the 'Fn' key to use a function key.