door

Concise Oxford English Dictionary © 2008 Oxford University Press:
door/dɔː(r)/

▶noun

• 1 a hinged, sliding, or revolving barrier at the entrance to a building, room, or vehicle, or in the framework of a cupboard.

• 2 the distance from one building to another: he lived two doors away.

– phrases
lay something at someone's door blame someone for something.
out of doors in or into the open air.

– derivatives
-doored adjective.

– origin OE duru, dor, of Gmc origin.