[cryptonector]

A uniquely... English word, that.

[throw0101a]

It originated in Prague due to two incidents:

* https://en.wikipedia.org/wiki/Defenestration#Origin

* https://en.wikipedia.org/wiki/Defenestrations_of_Prague

[ithkuil]

Also used in Italian and presumably in many other languages.

Like with any word, it's use in colloquial form may vary from generation to generation, from subculture to subculture etc

[QuercusMax]

Not at all. It's just the Latin prefix "de" (out of) plus "fenester" meaning window. Not an English word except by borrowing.

[cryptonector]

The joke was that [to my then knowledge] it's not used in Romance languages, but it is used in English.

[QuercusMax]

I believe the term originates with this historical event:

https://en.wikipedia.org/wiki/Defenestrations_of_Prague

And if you believe Wiki, it was used originally in Middle French.

[dismalaf]

Is it? I know of that word in at least 3 languages.