younger version of a tart, 11teen to 17, anyone in this age group that wanders into your site while your looking for ladies... you should be disappointed and turn away
1st dude in car: hey whats that up ahead?
2nd: wtf? man thats a jamtart!
1st: fuck! dam jamtarts!
by Kenladin October 15, 2004

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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

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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

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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

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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

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British slang for fart.
Just before letting one go, the British guy says, "Excuse me mate, Jamtart!".
by jmd04f March 25, 2009

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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

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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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