Idiot. Dumbass person
1. That kid is a jamtart.
2. Look at the kid cutting his finger off, what a jamtart.
by Andy W November 23, 2003
Top Definition
A lame person that leaves you hanging at the last minute by removing themselves from the plan.
Doug is not going to the strippers with us. He is a jam tart.
by Markoni March 31, 2006
A person who quits drinking alcohol before everyone else.
Mike is a jamtart for wanting to leave the bar so early.
by inaeldi April 08, 2004
A person who is unwilling participate in what he perceives to be risky, embarrassing, dangerous or foolhardy activities; the term is usually used to denigrate such individuals by those who do participate in the same activities.

Similar usage sometimes to 'coward', 'sissy' or 'momma's boy'.
"Don't be such a jamtart, Bill. The rest of us are all jumping off the cliff. You're such a sissy!"

"Hey, did you notice the Thormplegorp Twins at the theater today? They refused to watch Eat My Shorts. What a couple of jam tarts, eh!"
by Kimchiman April 21, 2009
Young, slender, attractive female, usually travelling into the nightlife in packs.
Knowingly dressing for attention.
Look at that jam tart!
by andrew at home April 21, 2006
British slang for fart.
Just before letting one go, the British guy says, "Excuse me mate, Jamtart!".
by jmd04f March 25, 2009
A combination of multiple slang words from Britain. The first being a police person and the second being a prostitute.
"That Tart turned out to be a real Jam Tart and I got arrested for it - I didn't even get a blowjob first!"
by CharlieSmith September 11, 2014
A person who is tender-hearted, despite trying to appear tough.
That big tough guy is just a jamtart, he cried at the end of the movie Ghost.
by Pathfindersfarm October 26, 2011
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