éboulement

éboulement

(ebulmɑ?)
n
the collapse or disintegration of the wall of a fortified buildinga landslide or fall of rock in a hilly and rocky terrain
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 ? HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014