Top Definition
the Irish for Shit. also, a person's cac's is their trousers or underwear in ireland.
that film was cac.
or, "Sean will u pull up your cacs, and put your mickey away u horny fecker"
بواسطة Emzolita مارس/آذَار 31, 2007
The Common Access Card (CAC) is a United States Department of Defense smartcard issued as standard identification for active duty military personnel, selected reserve personnel, civilian employees, and eligible contractor personnel.

The CAC is used as a general identification card as well as for authentication to enable access to DoD computers, networks, and certain DoD facilities. It also serves as an identification card under the Geneva Conventions. The CAC enables encrypting and crytographically signing email, facilitating the use of PKI authentication tools, and establishes an authoritative process for the use of identity credentials.
Sir, you need to show your CAC to gain entry to the base.
بواسطة Severian919 يناير/كانون الثّاني 24, 2007
Another way to say "cock."
Shaddup, ya fuckin cac!
بواسطة poop فبراير/شباط 12, 2003
Slang: Alternative for pussy or vagina, A cowardly person.

Origin: Alaska 21st century.
Stop being such a cac and do it already!

All we need is some beer and this place will be crawling with cac.

You shut up! Maybe if you weren't acting like a stupid cac.
بواسطة Robert M. Brooks Jr. يناير/كانون الثّاني 17, 2008
Another spelling of cack or cak, meaning shit or something inferior..
'That new Good Charlotte song is cac!'
بواسطة Evil-Ernie مايو/أيار 29, 2003
Carry-Able-Computer - A way more awesome definition for laptop.
Are you looking at Poképorn on your CAC? That's nasty.
بواسطة TheGreatKhali إبريل/نَيْسان 4, 2011
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