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'

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 , room access , threshold ]

anything providing a means of access (or escape); we closed the door to Haitian immigrants; education is the door to success'

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 room that is entered via a door; his office is the third door down the hall on the left'