cIOS either stands for "Custom Input/Output System" or "Custom Internal Operating System". cIOS is quite simply a modified/patched Nintendo Wii system IOS. by which we can run our own code (homebrew).
Person #1: What's your cIOS version ??
Person #2: it's cIOS Rev 14.
by Jowadmax September 25, 2010
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Person 1: broooo I ship cio
Person 2: me too brook
by Kyahhhh September 15, 2018
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Boy: "Mary's got a girlfriend! Mary's got a girlfriend!"

Girl: "CIO, I do not have a girlfriend! I'm not even a lesbian!"
by BHS22 July 2, 2017
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Chief Information Officer. If you read the industry publications, Chief Information Officers are at the vanguard of today's information-centric workplace. In practice, it's basically some poor schlub who's been given a fancier “IT Manager” hat, who's been given the responsibility to fix the dumpster fire that is your IT Systems, by giving “suggestions” that are roundly ignored by the Board while the CEO and CFO pilfer the coffers to buy hookers and blow, and to play the role of fall guy when the whole scam collapses.
You got promoted to CIO? Oh, you have my condolences.
by tariqk December 13, 2018
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Bro CIO you’re getting so angry at us!
by Sentral2937 March 29, 2020
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