Top Definition
A set amount of RPMs which your engine can put out before you pretty much blow it up. This is usually where your numbers on your tachometer start turning red, just be sure to keep it out of the red or else $$$$ will be needed. For instance, the redline on my 95 Jeep Grandcherokee is 5,300 RPMS that is exactly where they start turning red, some cars have a rev limiter on them, so due to my rev limiter the engine will not go past 5,300rpms and the engine starts "bouncing" meaning the needle will do the same. I advise you not to try this.
Dude your not supposed to shift while ur racing till you redline it
লিখেছেন- Ryan 7 de এপ্রিল de 2005

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The best energy drink ever. It will (with 8 oz, no less) get you to the most energetic you've ever been, and you'll stay there longer.

Shake well prior to use. Always begin use with 1/2 can of REDLINE daily to assess tolerance. Never exceed more than two cans daily or more than one can in a four-hour period. Do not consume REDLINE on an empty stomach. Consuming REDLINE on an empty stomach may cause nauseousness.

That warning is serious. The drink is serious. It's hands down the best.
I once drank a redline before a dance, and not only stayed at my peak the whole dance, but stayed there until the next morning.

Don't drink these on an empty stomach- you'll almost guarenteedly throw up.
লিখেছেন- yewtahn 6 de এপ্রিল de 2006

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(noun, verb)

An informal sketch over another person's piece of art to point out and correct flaws, especially in anatomy. The sketch is usually in red.
"This piece could really use a redline."

"Could you please redline my drawing of a hand for me, the proportions are off."
লিখেছেন- xSilverSky 29 de জুন de 2009

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The branch of the CTA's elevated service that runs from Howard Street to 95th/Dan Ryan. It includes a subway portion inside the Loop.
I took the red line to the Cubs game last night. And of course they won.
লিখেছেন- mark hammond 19 de অগাস্ট de 2005

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The most kick-ass line of BMX bikes during the 80s.
Check out that dude's Redline. It's as rad as Sonny Crocket.
The guy riding the Redline kicked all the other douches asses in the race.
লিখেছেন- Mr. Redline 6 de অগাস্ট de 2006

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A name given 2 A popular and VERY potent strain of marijuana during the late 90's and early 2000's . Found in and around the NYC metro area.
Man 2 pulls off that Red Line had me high as a kite !!!
লিখেছেন- Joey Botts jcnj 8 de সেপ্টেমবার de 2010

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To do something that scores major disapproval and/or anger. To many motor-heads, this term can be used perfectly, as it correlates with "redlining" on a car motor with RPMs.
"Dude, you slept with my sister. That's such a fucking redline."

"You're redlining right now and it's really pissing me off. Cut it out."
লিখেছেন- LSXJunkie 4 de অক্টোবার de 2009

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