Meaning of witness
Definition of witness
a close observer; someone who looks at something (such as an exhibition of some kind); "the spectators applauded the performance"; "television viewers"; "sky watchers discovered a new star"
(law) a person who attests to the genuineness of a document or signature by adding their own signature
perceive or be contemporaneous with; "We found Republicans winning the offices"; "You'll see a lot of cheating in this school"; "The 1960's saw the rebellion of the younger generation against established traditions"; "I want to see results"