Ace 

Someone Who Always Has Your Back; A Homie

"Hey's my ace, I'm his ace, that's how it works!" -A Cool Person

Ace by Royalty- November 21, 2009

ace 

Another word for awesome.

"Gahh, your shirt is so ace!"

ace by Luxx June 19, 2006

ace 

"pick of the litter" , prime choice

Your mom is a fucking ace.

ace by Cait/Eileen January 30, 2003

ace 

Means the same as "to rock, to rule, to pwn"

<yash> damn i learned english for 5h now...
<com> man you should ace that english class

ace by _yosh May 3, 2009

ace 

An expert or master. A specialist.

He's the ace in that team.

ace by Optimus November 20, 2003

Ace 

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.

Ace by Elsevier November 8, 2009

Ace 

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.

Ace by Tyler Pulliam April 12, 2007