Black's Law Dictionary 5th Edition -

: An agreement between two or more persons that creates a legal obligation.

💡 : For daily legal practice, consider the latest 12th Edition for updated statutes and modern terminology. If you'd like, I can help you: Find the exact definition for a specific legal term. Black's Law Dictionary 5th Edition

: A collateral agreement to perform another's undertaking if the primary obligor fails. : An agreement between two or more persons