defenestrate ******************************************************************************** The action of throwing out of a window. Defenestration of Prague, the action of the Bohemian insurgents who, on the 21st of May 1618, broke up a meeting of Imperial commissioners and deputies of the States, held in the castle of the Hradshin, and threw two of the commissioners and their secretary out of the window; this formed the prelude to the Thirty Years' War. Hence (as a back-formation) de{sm}fenestrate v. trans. (usu. joc.), to throw out of a window; de{sm}fenestrated ppl. a. (in quot. 1927 punningly = `windowless'?).