Any flap, etc. that opens like a door.
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.
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 mouthlike opening, such as the oral cavity of a nematode.
One of the tiny pores in the epidermis of a leaf or stem through which gases and water vapor pass.
A small opening in a membrane; a surgically constructed opening, especially one in the abdominal wall that permits the passage of waste after a colostomy or ileostomy.
An artificial anus.