noun passage; means of approach or access.
2. door ·noun an entrance way, but taken in the sense of the house or apartment to which it leads.
3. door ·noun an opening in the wall of a house or of an apartment, by which to go in and out; an entrance way.
4. door ·noun 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.