To correct someone, when they are wrong or mistaken.
Person 1: Did you hear Nelly's song "Hey must be the money?"

Person 2: Flash, that song is called "Ride Wit Me."
by Jameelah December 3, 2007
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In rock climbing, describes leading a route without falling after receiving information about the route beforehand or watching someone else climb it. See onsight and redpoint.
After my buddy told me how to surpass the crux of the route, I was able to flash it with ease.
by sano September 21, 2003
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The fastest thing eva....
Scott. E is Flash Ahhhhhhhhh
by Mr Flash January 27, 2005
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To transfer something to someone by means of a flash/jump drive.
Hey, did you do the lab?

Yeah...

Quick, flash it to me so I can print it.
by B-Rock D. December 3, 2008
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the hardest most annoying program to get to work right. If you can pull off all the action script and shit and you're a good artist you've got everything you need to be on the top 50 at Newgrounds
How the fuck do u make buttons on Flash its so damn annoying
by PlayDohMan October 1, 2004
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Part of the Dudar-Cressy vocabulary, 'flash' is a word describing something cool. It equates to that of the word 'groovy' or 'bitchin', but is much less retro.
That band is so flash!
How flash was that movie, guys?!
I really like your new haircut - it's totally flash.
by Sailor V October 27, 2005
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Flash, also known as, Adobe Flash Player and Macromedia Flash Player, is a major computer virus affecting multiple operating systems for over 10 years. The virus disguises itself as a game loader (for cheap little website games like the ones found on Facebook) as well as some video sites, but in reality it opens your machine up to hundreds of security risks, and loads up millions of not only annoying but extremely CPU intensive advertisements on websites that often make your web browser either start to lag like crazy or just simply crash unless you have a very powerful computer. My 2GHz C2D system could barely handle Flash ads, the CPU fan had to come on full speed to cool it as it ran so hot, just from ADS! Almost all computer security experts agree that Flash should NEVER be installed just for the security risks alone, never mind all the other stuff this virus leads to. Apple is one of the first companies to no longer preinstall Flash on their computers, and it is not usable period on their mobile devices. It is recommended that if you have A PC or an older Mac which ships with Flash, you remove it immediately.
Person 1: Did you know that Flash has had over 100 unaddressed major security holes for over a year now, leading to many extremely harmful viruses affecting PC's and Android phones, and even Mac's?
Person 2: I don't care, I wanna watch my porno videos and play these poorly done games on Facebook!
by iBoy2G February 22, 2011
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