Definition of witness
- witness Noun Attestation of a fact or event.
- witness Noun One who has a personal knowledge of something.
- witness Noun Someone called to give evidence in a court.
- witness Noun Something that serves as evidence; a sign.
- witness Verb To furnish proof of, to show.
- witness Verb To take as evidence.
- witness Verb To see, note, or gain knowledge of.
- witness Verb To present personal religious testimony; to preach at (someone) or on behalf of.