door

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”

Anything providing a means of access (or escape).

“we closed the door to Haitian immigrants”

“education is the door to success”

A room that is entered via a door.

“his office is the third door down the hall on the left”

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”

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”