High Quality Content by WIKIPEDIA articles! Defenestration is the act of throwing someone or something out of a window. The term "defenestration" was coined around the time of an incident in Prague Castle in the year 1618. The word comes from the Latin de- (down or away from) and fenestra (window or opening). Likewise, it can also refer to the condition of being thrown out of a window, as in The Defenestration of Ermintrude Inch.