To be boss at somethin; To be extremely good with/at.
I'm acing this painting!
by HalfwayToTheStars August 23, 2015
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1. Slang for Asexual
2. A fighter pilot who has shot down 5 or more enemy aircraft, especially referring to WWI and WWII pilots.

3. To pass a quiz or a test with no mistakes, to get 100% on a quiz or test.
1. I identify as ace
2. My grandfather was a WWII ace. He shot down 12 Nazi aircraft.
3. I aced Mr. Joseph's quiz! What did you get?
by kaminralph April 24, 2016
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ace is a mothafuckin awesome ass person, that's nice & keeps it 1hunnid
ace is so cool.
by yaboitoreal123 January 17, 2015
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someone who is really close to you.
someone you can relate to.
someone that you can easily talk to.
someone who listens.
someone who really care for you.
someone who share the same interests.
THAT'S MY ACE!

I LOVE MY ACE!
by MYKE BEZZY March 11, 2010
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AC is usually said in vine edits and it stands for "Audio Credit"
by PhilophobicHunter May 11, 2016
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In Counter-Strike, to kill the whole team. An ace is usually followed by relentless, verbal thrashing.

ayced aced ayce
"Z0mg, ACE!!! Baddies!!! #shittiesftwbbq
by keR. Magn3s1um March 30, 2008
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