What does "vouch" mean?

Vouch: To call upon to witness; to obtest. Vouch the silent stars and conscious moon. Dryden.

Additional senses

  1. 2.To warrant; to maintain by affirmations; to attest; to affirm; to avouch. They made him ashamed to vouch the truth of the relation, and afterwards to credit it. Atterbury.
  2. 3.To back; to support; to confirm; to establish. Me damp horror chilled At such bold words vouched with a deed so bold. Milton.
  3. 4.(Law) To call into court to warrant and defend, or to make good a warranty of title. He vouches the tenant in tail, who vouches over the common vouchee. Blackstone.
  4. 5.To bear witness; to give testimony or full attestation. He will not believe her until the elector of Hanover shall vouch for the truth of what she has . . . affirmed. Swift.
  5. 6.To assert; to aver; to declare. Shak.
  6. 7.Warrant; attestation. [Obs.] The vouch of very malice itself. Shak.

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