1. past tense and past participle of eyewitness; to see or observe something directly as a witness
Usage: transitive verb; less common than the noun form 'eyewitness'

Examples

• She eyewitnessed the accident from her office window.
• Several people eyewitnessed the crime and later testified in court.
• He eyewitnessed the historic moment and never forgot it.
• The journalist eyewitnessed the event and reported on it firsthand.
• They eyewitnessed the explosion from across the street.