OA 

OverAll. Can be used to describe a measurement; length, width, and height overall.

It measures 7" x 6" x 6 1/2" OA.

OA by Evilyn February 2, 2006

OA 

overage

''56-m has been kicked out ban reason oa''

OA by that boy everyone has a crush March 18, 2017

OA 

A mental disease that causes anxiety in an Otaku.
Usually self diagnosed

"Hey wanna hit up the club"
"Cant my OA levels are way to high"

OA by Chillediaux September 2, 2019

Oa 

A kid who has a big booty

Hey oa!

Oa by Just a random 52 year old July 20, 2020

Oa 

Absolute beauty who fishes to live, and lives to fish. Knows how to fish, catches lake monsters all the time. Pro angler

Oa is probably the biggest beauty at fishing

Oa by Not from Alabama May 28, 2020

Oa 

You most likely have kids in your basement

Oh that pedo he’s an oa isn’t he

Oa by Rahmate May 30, 2020

oa 

Is an amazing girl who is always confident and always speak her minds. She is loyal, and doesn’t afraid to tell you the truth even if it’s hurt. She’s extremely smart and is pretty person. She’s also one of the funniest person to be around.

I love Doaa she’s such a oa with her friends.

oa by onlyfaxx June 13, 2020