What does "attest" mean?

Attest: To give proof of; to manifest; as, the ruins of Palmyra attest its ancient magnificence.

Additional senses

  1. 2.To call to witness; to invoke. [Archaic] The sacred streams which Heaven's imperial state Attests in oaths, and fears to violate. Dryden.
  2. 3.Witness; testimony; attestation. [R.] The attest of eyes and ears. Shak.

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