1. a person who sees an event, typically a crime or accident, and can give a firsthand account of it
The eyewitness provided crucial testimony about what happened at the scene.
A testemunha ocular forneceu depoimento crucial sobre o que aconteceu no local.
2. someone who directly observes something happening
As an eyewitness to history, she will never forget that moment.
Como testemunha ocular da história, ela nunca esquecerá daquele momento.