noun

• (architecture) 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."
• (metonymic, chiefly in the plural) A building with a door, especially a house.
  "His house is three doors down."
• (immigration) An entry point.
• (figurative) A means of approach or access.
  "Learning is the door to wisdom."

verb

• (transitive, cycling) 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."