door, n.All

A Door is a part of a wall that you can turn on and off.

A Door is just a really short tunnel.

The Door is the key.

The Door gets angry with the wind.

Isaac Newton invented the cat door

A Door , when closing very gently, one pulls with one hand, pushes with the other.

A Door is a house mouth

A Door is what a dog is perpetually on the wrong side of.

A Door is something you never really go through, only a doorframe.