Door (noun)
definition:
a swinging or sliding barrier that will close the entrance to a room or building or vehicle
example:
"I knocked on the door."
Door (noun)
definition:
a room that is entered via a door
example:
"My office is the third door down the hall on the left."
Door (noun)
definition:
a structure where people live or work, usually ordered along a street or road
example:
"We often go to lunch with the workers from the office next door."
Door (noun)
definition:
the entrance (the space in a wall) through which you enter or leave a room or building
example:
"the space that a door can close"
Door (noun)
definition:
anything providing a means of access (or escape)
example:
"we closed the door to Haitian immigrants"