Fenestra is the latin word for window.
Similar words are used in some latin languages as Italian, catalán or Galician.
I don't think it would be much used in central Europe, maybe in Romanian, as it also derivated from latin. But I don't think that would be the case for Germanic or slavic languages.
Edit: just looked it up, seems like some Germanic languages also have the same Latin root for window.
"Fenêtre" in French. And "defenestré/defenestration" is the direct translation. Looks to me like another word nicked from the French by the "perfides albions".