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English definition of “witness”

witness

verb [T] (BE PRESENT)    /ˈwɪt.nəs/
B2 to see something happen, especially an accident or crime: Did anyone witness the attack? They were staying in the capital at the time of the riots and witnessed several street battles. [+ -ing verb] He arrived home just in time to witness his brother being taken away by the police.Using the eyesEyesight, glasses and lensesThe eye and surrounding areaPerceptive to be present at an event and to sign your name as proof that it happened or that it was done correctly: Her will was drawn up by a solicitor and witnessed by two colleagues.Signing and signatures
(Definition of witness verb (BE PRESENT) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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