debouchment
(dɪˈbaʊtʃmənt) n1. (Military) the act or an instance of debouching
2. (Physical Geography) Also: debouchure an outlet, mouth, or opening
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014