unbar

Example:They placed a bar across the entrance to prevent people from entering the building.

Definition:to obstruct or impede with a bar; bar the entry to.

Example:The thief broke into the house by unlocking the door and entering through it.

Definition:to secure (a door, window, etc.) with or as if with a lock or locks; barricade.

Example:The emergency button was pressed, and the door closed to secure the area.

Definition:to cause (something) to become impenetrable to light, open spaces, or to air and heat; shut.