OB

Abbreviation of "Open Beta" referring to a software that is open for evaluation; Blackbox-testing.

When will the OB start for that new mmorpg?

by Fraggleroc January 1, 2008

ob

Short for ; Over Board
Having or dealing with taking things to far!

Man that girl's outfit actually looked good until she went ob with those bright ass socks !

by Some girl who lives in Baltimo May 18, 2010

obs

open Bolt Semi, this is a type of gun that was ruled an illegal machine gun by the ATF in 1982. It was decided that they were to easy to convert to full-auto.

the obs kg-9, the predecessor to the closed bolt kg99 or tec9, was ruled an illegal machine gun.

by Alex Lindsay March 27, 2008

ob

Prefix meaning "obligatory". Most commonly used when saying something otherwise offtopic in places like Slashdot where that is frowned upon. Can be used where something is expected but might otherwise be missing.

Jessica Simpson is an airhead.
ObTopic: Linux is cool.

ObDrama: But she said she liked him instead.

ObLanguagePolice: There is no such word as "alot".

by fax4voice3 December 28, 2005

OB

"Old Balls" usually used to make fun of someone because of their age, or on their birthday to make them feel old.

"Hey Ryan you have OB now that your 25"

by pobcat March 22, 2010

obes

obes (see obes)

Obes is Obes

by Obes October 22, 2003

OB

Older Boy. similar to Older girl or Little boy. if you are a girl and you are going out with and older boy OB.

I think i am going to the party, there will be OBs.

Are you going out with an OB?

by pooismylife June 11, 2011