E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
An indiscriminate slaughter of Loyalists confined at the time in the Abbaye and other French prisons. Danton gave order for this onslaught after the capture of Verdun by the allied Prussian army. It lasted the 2nd, 3rd, and 4th of September, 1792. As many as 8,000 persons fell in this massacre, among whom was the Princess de Lamballe.