1. n. A portal of entry into a building, room, or vehicle, 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 ho
I knocked on the vice president's door
2. n. Any flap, etc. that opens like a door.
the 24 doors in an Advent calendar
3. n. (immigration) An entry point.
4. n. (figurative) A means of approach or access.
Learning is the door to wisdom.
5. n. (figurative) A barrier.
Keep a door on your anger.
6. n. (computing, dated) A software mechanism by which a user can interact with a program running remotely on a bulletin board system. See BBS door.
7. v. (transitive, cycling) To cause a collision by opening the door of a vehicle in front of an oncoming cyclist or pedestrian.
