Door

A door is a hinged or otherwise movable barrier that allows ingress (entry) into and egress (exit) from an enclosure. The created opening in the wall is a doorway or portal. A door's essential and primary purpose is to provide security by controlling access to the doorway (portal).

Conventionally, it is a panel that fits into the doorway of a building, room, or vehicle.
Doors are generally made of a material suited to the door's task.
They are commonly attached by hinges, but can move by other means, such as slides or counterbalancing.

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Source: Wikipedia · Image: Wikimedia Commons · Public domain

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