Slang for asexual, a person who experiences no sexual attraction or desire. Similar to the colloquial use of gay as a synonym for homosexual.
-What do you say we go back to my place?
-Sorry, not interested. I'm ace.
by Elsevier November 8, 2009
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1. Cool and Awesome and Popular

2. To be and act as such
1. Ty's new wallet is Ace.

2. He's hot and popular, I wish I was as Ace as him.
by Tyler Pulliam April 6, 2007
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Ass Crack Sweat...caused by so much physical exertion that the sweat runs into the crack of you ass causing the cheeks to slide against one another.
Dude, it was so hot outside today I had some ACS brewin.
by Bigdaddy_J August 17, 2007
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An awesome word for only the best and most bad ass people on this planet
"I am so AcE" "Imma 420 blaze that like AcE did" "That AcE is fucking awesome"
by AcESnIPeRpRo April 10, 2015
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Abbreviated form of Atlantic City. Used by suburban kids to sound like they're urban kids when talking about Atlantic City, New Jersey.

Atlantic City is a resort on the Southern New Jersey shore famous for its boardwalk, its casinos, its beaches, and also for White House Subs.
Yo, there's a party up in AC. Wanna go?

or

Sorry, man, I gotta go to the doctor's in AC tomorrow. We'll do lunch some other time.

or

-Dude, the waves are huge in AC!
-Which beach?
-Mississippi Avenue. Let's go!
by Antonius October 11, 2004
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A word amongst friends, co-workers, or strangers that means: Cool, awesome, great, super, THE-best, rad. Etc Everything packed into one word.
Amir: That party was so Ace man!

Jake: You weren't there, and how did you know i had a party?

Amir: Whatever.... it was still ace, dinner tonight?
by Ace & Jocelyn February 27, 2009
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Cooler than all preconceived notions. The absolute epitome of all things in any designated category.
Dude, your girlfriend is pretty cool.

Jasmine? Nah she's Ace.
by ShakeandBaker May 17, 2010
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