short sale

sale of securities that do not belong to a seller (with the intention of buying them back after the price goes down)

A short sale can refer to various kinds of transactions:Short (finance) - the seller does not own a security that they sell.Short sale (real estate) - the lender allows a property to be sold for less than the amount owed on a mortgage and takes a loss.
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Noun
1. sale of securities or commodity futures not owned by the seller (who hopes to buy them back later at a lower price)
(synonym) short selling
(hypernym) trading

Selling a security that the seller does not own but is committed to repurchasing eventually. It is used to capitalize on an expected decline in the security's price.