1. Generally, directed by each toward the other or others; reciprocal. [Cases: Contracts 55. C.J.S. Contracts § 109.]
2. (Of a condition, credit covenant, promise, etc.) reciprocally given, received, or exchanged.
3. (Of a right, etc.) belonging to two parties; common. [Cases: Contracts 10. C.J.S. Contracts § 108.] — mutuality, n.