1. (n.) A pledge, guarantee or security to insure a debt or obligation.
2. (n.) That which makes sure; that which confirms; ground of confidence or security.
3. (n.) Security against loss or damage; security for payment, or for the performance of some act.
4. (n.) One who is bound with and for another who is primarily liable, and who is called the principal; one who engages to answer for another's appearance in court, or for his payment of a debt, or for performance of some act; a bondsman; a bail.
5. (n.) Hence, a substitute; a hostage.
6. (n.) Evidence; confirmation; warrant.
7. (v. t.) To act as surety for.
Thesaurus Entries
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