I haven't darkened a church door in years.

The revolving-door syndrome is a common problem in politics.

She suffers from the revolving door syndrome.

The platform screen doors on the subway station are very effective in preventing accidents.

The boys next door are always playing basketball in their backyard.

The car door handles were broken.

There are many four door houses in this neighborhood.

The gentlemen of the back door arrived at the party in style.

I have multiple garage door openers for my house.

There were a group of stage-door Johnnys waiting outside the theater.