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1.
jar
A "jar" of 100 Ecstacy pills
My man just got a jar in last week. He's gotta get rid of all that X quick.
by Joe August 28, 2004
 
2.
Jar
Used mainly in the London area, meaning annoying
"That girl is such a jar"
by Strawberry Jam January 01, 2006
 
3.
jar
Pint of the good stuff
"Let's go down the pub and get a few jars in."
by Ninja Steve April 29, 2004
 
4.
Another name for pints of Lager or Beer
- You fancy a couple of Jars the night?
- You rate the Jars!
by jameshunttheshunt January 28, 2009
 
5.
JAR
JAR- Jizz And Run. When you are hooking up with someone and the other person cums (jizzes) and immediately runs away from you afterwards. Often times pre-ejaculation.
Dude I was JARED on senior week.
by Babysharkfang August 02, 2011
 
6.
JAR
ACRONYM: Just Aint Right.

This word is used to describe children who "Just Aint Right"

Synonyms: POPP, stupid, dumb, naughty, never going to fit in types, not mainstream, messed up, etc, etc, and so forth.

they have little or no potential to be normal until they get the right treatment/therapy.
Maria: Johnny has ADD.
Hose: No he doesnt, Johnny is a JAR!

Alex: This boy needs to go to the institution
John: Yeah, there is nothing we can do about it. He is a JAR.
by g-diggity June 10, 2006
 
7.
Jar
This is a term normally coined in Timmins, Sudbury and surrounding area. (Northern Ontario)

It means to be funny, silly or fun to be around.
Your a 'jar' to be around.
Your such a 'jar'.
He's / She's such a jar to be around.
We jar'd out all night.
Your 'jarring' me out! (Meaning to be very funny or silly!)
by gatekeeper501 March 12, 2010