door

noun

1. A portal of entry into a building, room, or vehicle, typically consisting of a rigid plane movable on a hinge. It may have a handle to help open and close, a latch to hold it closed, and a lock that ensures it cannot be opened without a key.

   “I knocked on the vice president's door.”

   “Then everybody once more knelt, and soon the blessing was pronounced. The choir and the clergy trooped out slowly, […], down the nave to the western door. […] At a seemingly immense distance the surpliced group stopped to say the last prayer.”

   “‘No. I only opened the door a foot and put my head in. The street lamps shine into that room. I could see him. He was all right. Sleeping like a great grampus. Poor, poor chap.’”

2. (in-plural, metonymically)A building with a door, especially a house.

   “His house is three doors down.”

   “He went five doors up the road to the bank.”

   “We walked three doors up the street where we stopped in front 71 Richard D. Kutz.”

   “"...The storage room is about, oh, three doors down, on the left. I'll point it out as we go by. Pay attention so you know where you have to come back to. Only then it'll be — let me see — about five doors down on your right."”

   “A woman pushes a stroller in the direction of the synagogue, and another, just one door down from Pessie's apartment, is unloading groceries from her minivan.”

3. Any flap, etc. that opens like a door.

   “the 24 doors in an Advent calendar”

4. An entry point.
5. (figuratively)A means of approach or access.

   “Learning is the door to wisdom.”

6. (figuratively)A possibility.

   “to leave the door open”

   “all doors are open to somebody”

7. (figuratively)A barrier.

   “Keep a door on your anger.”

8. (dated)A software mechanism by which a user can interact with a program running remotely on a bulletin board system. See BBS door.
9. 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.”

verb

1. (transitive)To cause a collision by opening the door of a vehicle in front of an oncoming cyclist or pedestrian.

   “Kerr has acted for numerous clients who have been doored, including one man knocked off his bike and on to spiked railings, and another who ended up hitting a tree.”

   “He [Pete Karageorgos] said cyclists who are doored are entitled to claim accident benefits from the driver's insurer if they aren't covered by a policy of their own.”

   “To avoid being doored, cyclists such as Vilain, Davis-Overstreet and Michael Schneider monitor as many telltale signs as possible: shadows, brake lights, the actions of people sitting in the driver's seat.”