Not exactly that. Shorting a shock means selling borrowed stock in hopes that the sp falls, or you believes it will, then buying it back at a hopefully, lower price, and giving the stock by, and make a profit depending on the difference.
Generally its a higher risk since when you buy normally, you can only lose 100%, that is, when a stock goes all the way down, you lose your investment. But when you short a stock, the sp could go up more than 100%, therefore losing more than 100%.
Hope that helps
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