Attestation \At`tes*ta"tion\, n. [L. attestatio: cf. F. attestation.]

The act of attesting; testimony; witness; a solemn or official declaration, verbal or written, in support of a fact; evidence. The truth appears from the attestation of witnesses, or of the proper officer. The subscription of a name to a writing as a witness, is an attestation.

Source: Webster's Revised Unabridged Dictionary (1913)