AA

Anti-Air

A term used in some online videogames for any anti-aircraft emplacement. This means a flak emplacement, SAM battery, or anti-air machine gun.

We can't hit with the bombers until you take out that AA!

by Elitist January 18, 2004

AA

Asian American

The AA population is approximately 3%.

by jasonfx October 18, 2008

AA

Short for American Airlines. Used soley by the company on their signs.

Wrong:
man: Where's the AA meeting?
chic: At the church.
Right:
man: Where's the American Airlines meeting?
chic: In the office.

by J-Diddy April 12, 2005

aa

A ragged, clinkery form of lava (or in more proper Hawaiian spelling, ‘a‘a).

Aa is flowing from the volcanoe!

by rebecca van laer June 29, 2005

aa

Archmere Academy- the best school in the history of delaware.

I love my AA friends so much.

by jim July 26, 2006

AA

A Grade you can get when you Combo your way through an entire song on DDR or get a majority of Perfects.

Yea! I totally AA'd Dream A Dream!

by Vince July 26, 2006

AA

An evaluation score in Dance Dance Revolution where the dancer has achieved a total of 95% or more of the total Dance Score of a song. Usually used as a verb when telling someone of the accomplishment.

Dude, I just AA'd PARANOiA Survivir MAX Ohi!

by asdasdasdasdasd July 26, 2006