“Fenestra” is the Latin word for “window.” It’s very similar in form and usage to “porta,” meaning “door.”

If the word “deportation” means being pushed out the door, then “defenestration” should, logically, mean being pushed out the window.

This is a word which, logically, should exist. And it does. But in practice it is used by Latin students who are looking for an excuse to use it.