1. A hallway or passageway that is hidden from view, often built into walls or behind doors, designed to be inconspicuous or secret
The mansion had a concealed hallway behind the bookshelf that led to a hidden library.
A mansão tinha um corredor oculto atrás da estante que levava a uma biblioteca secreta.
2. An interior passage that is not immediately visible or accessible to the general public
Staff used the concealed hallway to move between departments without being seen by customers.
A equipe usava o corredor oculto para se mover entre departamentos sem ser vista pelos clientes.