The most used key combination to undo the previous action the user has made.

The use of a key combination to easilly perform a command was first introduced by Macintosh, using the Q, Z, X, C and V buttons, in combination with the Command key, for the actions quit, undo, cut, copy and paste (in that order).

It was passed down to other Operating Systems, but with other operating systems using other keyboards the Ctrl (Control) key was used, since they didn't have the same control key as a Macintish keyboard does.


Also see "Inside Macintosh. Volume 1" Chapter I page 53, for the first ever mention and explanation of this command.
You see a person working on an image in Photoshop "Oh, crap, I made a mistake! Undo!" The person presses Ctrl+Z to unto his mistake
(NOTE: In Photoshop Ctrl+Z undoes all recent actions made with the tool selected, Ctrl+Alt+Z however undoes the last action only, yet can be pressed repeatedly to undo several previous actions)
by AARST July 30, 2004
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A desperate attempt to fix a borked situation.
A: You told her she was a dumb cow with a socially irresponsible haircut?
B: Yeah, I spent the rest of the weekend Ctrl+Z'ing that shit from seventeen directions.
by sv-1 August 29, 2007
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The Ghetto version of Alt + F4. It is used by trolls to make someone kick or close their processes/windows.
Guy : Hey press CTRL + W and I'll give you free items!

Kid : YE! Sure!

*Kid has left the game*
by Boogoo816 April 01, 2018
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The quickest way to close your browser on most laptops to hide the fact you are on porn / Urban Dictionary.
Guy 1 : "The other day, I was looking at the definition for backhand, when my sister came my room!"

Guy 2 : " Did you Ctrl+W?"

Guy 1 : "I did, but she slapped me with the back of her hand because I had incest porn on my other window."
by SevenThree April 05, 2015
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That guy at your office who uses the ctrl keyboard commands for everything.
Robert just reached Babylon 5.0 on the nerd scale with his knowledge of the keyboard commands, what a ctrl freak.
by Nate and Paul January 23, 2008
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(1)noun; the keyboard buttons labeleled 'Ctrl' and 'F', which when used together will bring up a search-this-page featre.

(2)verb; to search a key word or phraseon acertain webpage by pressing Ctrl + F.
(1)Be careful so that you use Ctrl-F to search not to vague a term and not too specific, so as not to find parts of words and not not an exact phrase which won't show up.

(2)I Ctrl-F'd the relavent word and bam, there it was!
by Vroon September 18, 2006
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