Noah Webster's Dictionary 1. (v. t.) To call; to summon. 2. (v. t.) To call upon to witness. 3. (v. t.) To warrant; to maintain by affirmations; to attest; to affirm; to avouch. 4. (v. t.) To back; to support; to confirm; to establish. 5. (v. t.) To call into court to warrant and defend, or to make good a warranty of title. 6. (v. i.) To bear witness; to give testimony or full attestation. 7. (v. i.) To assert; to aver; to declare. 8. (n.) Warrant; attestation.

Multi-Version Concordance Vouch (1 Occurrence) Job 33:23 If there be with him an angel, An interpreter, one among a thousand, To show unto man what is right for him; (See JPS)