Definition of 'Callable Bond'
A bond that can be redeemed by the issuer prior to its maturity. Usually a premium is paid to the bond owner when the bond is called.
Also known as a "redeemable bond."
Investopedia explains 'Callable Bond'
The main cause of a call is a decline in interest rates. If interest rates have declined since a company first issued the bonds, it will likely want to refinance this debt at a lower rate of interest. In this case, company will call its current bonds and reissue them at a lower rate of interest.