ARB

Apparent Reason Boning. The opposite of NARBing. Boning a chick for a reason.

Man, last night I ARB'd that girl I like.

by Osgrip1931 February 7, 2010

arb

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

Bee arbs

It is saying BRB in real words

Bee arbs, need the toilet.

by AssassinGG October 30, 2011

arb

African Round Ball aka basketball

Jerome went to play some arb in the projects.

by herpn derpn February 8, 2014

Arb

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 30, 2011

Arb

When something is so great, it's astounding, remarkable and breathtaking.

Did you see the new LOTR movie? It's arb.

by NotUrbanDictionary July 21, 2017

Arb

Arb is short form for arbitrary and is used more in the colloquial sense. Implying random or some sort of randomness or non-importance.

Dude, that shirt looks so arb.

by ArbUser May 13, 2020