A keyboard key that toggles upper case on and off. When on, pressing any key automatically delivers the shifted version of the key, except for numeric digits, periods, commas, slashes and backslashes.
"Caps Lock key." YourDictionary, n.d. Web. 16 May 2018. <http://www.yourdictionary.com/caps-lock-key>.
Caps Lock key. (n.d.). Retrieved May 16th, 2018, from http://www.yourdictionary.com/caps-lock-key