In the context of online forums especially, it carries the connotation of a subtle put-down, passive-aggressive remark or an obvious attack on someone. Not the same as flaming, because flaming is obvious and usually angry and incites hatred.

Often, you will see something to the effect of "did you just take a jab at me" because the remark in question isn't blatantly obvious.
Girl on forum: I just don't get why every time I try to help people take it the wrong way!

Guy on forum: ^ some ppl just turn someone elses pain around and play the victim....

Girl: did you just take a jab at me or was that to someone else?
by Hotrodriguez85 November 25, 2013
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12 blows (one blow is about .2 of a gram of heroin, which are sold in either small bags or folded up tin foils). One blow is usually $10. A jab is a deal for 12 blows at $100. Sometimes it can be 13 blows for $110.
Yo, can I get a jab?
by syntheticpure October 17, 2005
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A vaccination, or a straight punch. Direct and to the point. Concise.
"Remember those flu jabs we got as kids?"

"After he told me the truth I jabbed him in the face with my left."
by Kung-Fu Jesus April 16, 2004
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In boxing/martial arts: a technique done by the foremost bodily weapon (99% of the time, the foremost fist). The strike is linear and the power is not the best stopping technique due to limited displacement of weight in the time executed. It is often a "feeler" technique designed to 'stun', or 'follow up' with another technique (usually the cross-punch).

More power can be mustered with the strike if the hips are stabilized, the shoulders displaced forwards, and the feet grounded from their footwork. This is subject to the art and the user, but a jab can muster more of the body than simply the arm's extension and muscle.

A jab can also be a foot strike with the frontal foot in a sideways stance that "pokes" at the opponent with the intent of fending them off, or causing "stunning" pain to the shin, groin, abdomen, or higher targets. This "foot fencing" is designed to follow up with another technique or to buy time.
1.
"I bashed him with a one-two."
"A one-two?"
"You dummy, the jab-cross! It was the cross that sent him to the dentist, heh!"
by Berginnator August 15, 2006
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$100 worth of heroine, a dozen bags
yo, let me get a jab
by skrillakilla July 17, 2005
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a large, fast jerking movement that hurts you.
i jab you
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british word for stick a needle in me and pump me full of fauxine
so much virus, the jab was now mandatory. thank the queen.
by kingcomment March 24, 2021
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