Wooden door here, hinged or otherwise movable barrier that allows ingress into and egress from an enclosure. The opening in the wall is a doorway or portal. A door’s essential and primary purpose is to provide securty by controlling access to the doorway (portal). Conventionally, it is a panel that fits into the portal of a building, room, or vehlicle. Doors are generally made of a material suited to the door’s task. Doors are commonly attached by hinges, but can move by other means, such as slides or counterbalancing. You need one if you don’t have it