Pronunciation: (wit'nis),[key] —v.t. 1. to see, hear, or know by personal presence and perception: to witness an accident. 2. to be present at (an occurrence) as a formal witness, spectator, bystander, etc.: She witnessed our wedding. 3. to bear witness to; testify to; give or afford evidence of.
4. to attest by one's signature: He witnessed her will.
—v.i. to bear witness; testify; give or afford evidence.
—n. 1. an individual who, being present, personally sees or perceives a thing; a beholder, spectator, or eyewitness.
2. a person or thing that affords evidence.
3. a person who gives testimony, as in a court of law.
4. a person who signs a document attesting the genuineness of its execution.
5. testimony or evidence: to bear witness to her suffering. 6. (cap.) a member of the Jehovah's Witnesses.