short for Protoss Arbiter from the PC game, StarCraft. The flying vessels provide invisibility to surrounding friendly units. They can stasis units to protect them from any and all damage, and can use recall to teleoprt units anywhere on the map.
Holy crap dude, that Arb just recalled 8 Reavers into my minerals.
by K Pittman September 03, 2005
Short for arbitrary person not worthy of mention; when referencing the name of the person/thing is unnecessary.
"Remember that arb dancing with Danielle last night?!"

"Tony always talks to the most arb skos I've ever seen!"
by Danielle Ducre June 25, 2005
A little man, who is often extremely anal over his business.
It is usually used as a comparison but it can however be used as a term of endearment for a clever person.
You're more anal than ARB...
or
You're such an ARB
by Charlie Thoms February 27, 2004
An epic typo by Mabinogi NA player "archranger" of the Alexina server. This word was meant to be "Narb" but he failed so epicly it turned out as "Arb" and the term slowly developed into the frequently used word we know today, ARB!
1). Eddward is an ARB at cross dressing.
by Refuserishere July 29, 2011
the act of getting a random boner
A Random Boner
Oh shit I just got a terrible ARB
by Elisa294543 February 09, 2011
Apparent Reason Boning. The opposite of NARBing. Boning a chick for a reason.
Man, last night I ARB'd that girl I like.
by Craw210guest February 07, 2010
Short for 'Arbitrary' - this acronym is used more commonly where the context of the word implies the likes of the target object/subject being 'random', 'strange', 'unusual', etc...
What an arb picture - looks like the guy's head is out of proportion with the rest of his body! And what's up with that pink porche in the background? Must be a photoshop.
by Dimitri Pappas July 22, 2008

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×