Pronunciation: (bī'bak"),[key] —n. 1. the buying of something that one previously sold.
2. any arrangement to take back something as a condition of a sale, as by a supplier who agrees to purchase its customer's goods.
3. Also called stock buyback. a repurchase by a company of its own stock in the open market, as for investment purposes or for use in future corporate acquisitions. Also,buy'-back".