Top Definition
A brief but drastic drop in the value of stocks; can be triggered by investor fears or simple human error (adding a few too many zeros to the end of your stock sell).
Dude, you watchin CNBC??? The Dow's dropped 1000 points in like 5 minutes, but now it's back up again! It's a flash crash!
by ChazzyJoe May 18, 2010

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