Saint Bartholomew’s Day Massacre n (Historical Terms) the murder of Huguenots in Paris that began on Aug 24, 1572 on the orders of Charles IX, acting under the influence of his mother Catherine de’ Medici Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014