1. stands for, Josh, Andrea, Chet, Sam. We are all POTSO's. that stands for people out to skrew others.
2. people who come on urbandictionary to make kids feel bad by putting tru shit about them on here :).
1. JACS, skrew with us, we skrew with u.
2. ryan, the JACS are going to have to make fun of u on here :).
by Chet and Josh November 06, 2004
8 more definitions
Top Definition
a great guy, pretty much natures nobleman.
honest, faithful, and even has nice hair and teeth. great brother, friend, and anyone who dates him is a pretty lucky girl. jacs' usually excel at sports such as track and soccer.

"that guy is so cool, he's such a jac"

"did you know in the past days, baby jesus was referred to as jac?"
by oh ya know. September 09, 2008
Welsh spelling of Jack.

Jac Morgan get ew'ar goooaat of my mounten!
by rararararararar February 11, 2008
Jac is an amazing person that likes to correct peoples spelling mistakes. But it's all okay because it helps when doing english coursework.
Jac says: just urban dictionary'd my name. DICTIONARIED*
by Cream1995 October 18, 2010
Noun - to take an extended time off work

Thought to have originated in Thundercity

'i'm taking a jacs' or 'I'm gonna do a jacs'
by A. Hobbit September 11, 2007
A trio of three people, whose first letters of their first names consist of an "A", a "C", and a "J." JAC is typically awesome, exuberant, and quirky. If crossed, JAC can become vicious, manipulative and even violent. Everyone wants to be a part of JAC, but can't be.
I wish I was part of a cool trio like JAC.
JAC is so much better than ZAC.
by Member-Of-The-Year November 28, 2010
Big Tits
Jacs has big tits
by Nikki June 13, 2003

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