attestation of a fact or an event; testimony.-that which furnishes evidence or proof.-one who is cognizant; a person who beholds, or otherwise has personal knowledge of, anything; as, an eyewitness; an earwitness.-one who testifies in a cause, or gives evidence before a judicial tribunal; as, the witness in court agreed in all essential facts.-one who sees the execution of an instrument, and subscribes it for the purpose of confirming its authenticity by his testimony; one who witnesses a will, a deed, a marriage, or the like.-to see or know by personal presence; to have direct cognizance of.-to give testimony to; to testify to; to attest.-to see the execution of, as an instrument, and subscribe it for the purpose of establishing its authenticity; as, to witness a bond or a deed.-to bear testimony; to give evidence; to testify.