1. A concealed or secret corridor, tunnel, or pathway that is not visible or accessible to the general public
The castle had a hidden passage that led directly to the dungeons.
O castelo tinha uma passagem oculta que levava diretamente aos calabouços.
2. A secret route or way of access used for escaping or moving undetected
During the war, refugees used hidden passages to escape the city.
Durante a guerra, os refugiados usavam passagens ocultas para escapar da cidade.