dɔː dɔɹ do(ː)ɹ ˈdɔɹweɪ ˈdɔːweɪ ˈθɹeʃ(h)əʊld ˈθɹɛʃ(h)oʊld 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 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 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