Definition of vouch

• v. t. - To call; to summon.
• v. t. - To call upon to witness; to obtest.
• v. t. - To warrant; to maintain by affirmations; to attest; to affirm; to avouch.
• v. t. - To back; to support; to confirm; to establish.
• v. t. - To call into court to warrant and defend, or to make good a warranty of title.
• v. i. - To bear witness; to give testimony or full attestation.
• v. i. - To assert; to aver; to declare.
• n. - Warrant; attestation.