What is Selling short or Short selling

An investor sells short when he anticipates that the price of the shorted stock will fall from the existing price. He borrows a share and sells it. As the share price dips, he buys the same share at a lower price and returns it back, while pocketing a profit in the bargain. An adage that describes short selling is ("selling high and buying low'.) Selling Short (Shorting) is an effective tool for traders as it allows us to profit from declining stock and index prices.A definition of "Selling Short"Selling short implies establishing a market position by selling a security one does not own, in anticipation that the price of the security will fall.