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?"
#jac #natures nobleman #jacopo #awesome #soccer pro
by oh ya know. September 09, 2008
Welsh spelling of Jack.

Jac Morgan get ew'ar goooaat of my mounten!
#jac #john #jack #jane #ieaun jeanne etc etc
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*
#jac #spelling #mistake #dictionary #amazing
by Cream1995 October 18, 2010
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
Jac - Jac is A Term That is often used . The word refers to represent
Hey Tom Were are you From what are you Jaccing

I'm Jaccing long beach all day

Jack ' jacc ' Jaccing ' jac
by 201aceman October 21, 2015
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'
#jacz #jaks #sickie #siccie #jacki
by A. Hobbit September 11, 2007
Big Tits
Jacs has big tits
by Nikki June 13, 2003
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