Door

1. An opening in the wall of a house or of an apartment, by which to go in and out; an entrance way.
2. The frame or barrier of boards, or other material, usually turning on hinges, by which an entrance way into a house or apartment is closed and opened.
3. Passage; means of approach or access.
4. An entrance way, but taken in the sense of the house or apartment to which it leads.
Blank door, Blind door ,
etc. (Arch.) See under Blank, Blind, etc.
In doors, or Within doors ,
within the house.
Next door to ,
near to; bordering on.
Out of doors, or Without doors, and, [colloquially], Out doors ,
out of the house; in open air; abroad; away; lost.
To lay (a fault, misfortune, etc.) at one's door ,
to charge one with a fault; to blame for.
To lie at one's door ,
to be imputable or chargeable to.