A sealed, airtight chamber, such as in a manned spacecraft or submarine, used to provide access to and from the sealed area without allowing air out or water in.
A vestibule, foyer or entranceway with doors to the exterior on one end and doors to the interior on the other, functioning to keep indoor and outdoor air, humidity, and air temperatures separate.
A portal of entry into a building, room, or vehicle, typically consisting of a rigid plane movable on a hinge. Doors are frequently made of wood or metal. May have a handle to help open and close, a latch to hold the door closed, and a lock that ensures the door cannot be opened without the key.
An entry point.
A barrier.
A means of approach or access.
Any flap, etc. that opens like a door.
A possibility.
The proceeds from entrance fees and/or ticket sales at a venue such as a bar or nightclub, especially in relation to portion paid to the entertainers. "The bar owner gives each band a percentage of the door and charges customers more to get in"
To cause a collision by opening the door of a vehicle in front of an oncoming cyclist or pedestrian.