door
n 1: a swinging or sliding barrier that will close the entrance
to a room or building; "he knocked on the door"; "he
slammed the door as he left"
2: the space in a wall through which you enter or leave a room
or building; the space that a door can close; "he stuck
his head in the doorway" [syn: {doorway}, {room access}, {threshold}]
3: anything providing a means of access (or escape); "we closed
the door to Haitian immigrants"; "education is the door to
success"
4: a swinging or sliding barrier that will close off access
into a car; "she forgot to lock the doors of her car"
5: a house that is entered via a door; "the house next door";
"they live just two doors up the street from us"
6: a room that is entered via a door; "his office is three
doors down the hall on the left"