Surety

1. v. t. To act as surety for.
2. n. The state of being sure; certainty; security.
3. n. That which makes sure; that which confirms; ground of confidence or security.
4. n. Security against loss or damage; security for payment, or for the performance of some act.
5. 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.
6. n. Hence, a substitute; a hostage.
7. n. Evidence; confirmation; warrant.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.