The release, prior to trial, of a person accused of a crime, under specified conditions designed to assure that person's appearance in court when required. Also can refer to the amount of bond money posted as a financial condition of pretrial release.

Source: U.S. Courts

Money or other security (such as a bail bond) provided to the court to temporarily allow a person's release from jail and assure their appearance in court. "Bail" and "Bond" are often used interchangeably. (Applies mainly to state courts.)

Source: U.S. Courts

A security deposit (usually money) given to release a defendant or witness from custody and to make sure that they go to court when theyre supposed to.

Source: California Courts.