Sentence:  The "<WSD>Defenestration</WSD>" at Prague (A.D. 1618). [...] The imperial Austrian Councillors are thrown out of the window of the castle of Hradschin by the enraged Bohemian Deputies [...] 
Meaning of the word marked with <WSD> tags:  The act of throwing something or someone out of a window. (from "c." 17th c.)