Door - Definition

n 1: a swinging or sliding barrier that will close the entrance
to a room or building or vehicle; "he knocked on the door";
"he slammed the door as he left"
2: the entrance (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, door,
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 structure where people live or work (usually ordered along
a street or road); "the office next door"; "they live two
doors up the street from us"
5: a room that is entered via a door; "his office is the third
door down the hall on the left"