An entry point.
A barrier.
A means of approach or access.
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.
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.
A playthrough that details the steps involved in winning the game.
A financial audit that traces a sample transaction through the system to ensure that it is processed and reported correctly.
A theatrical or film rehearsal in which the actors move around the stage or set but are not in costume.
The process of inspecting algorithms and source code by following paths through the algorithms or code as determined by input conditions and choices made along the way.