bed moulding n 1. (Architecture) a moulding in an entablature between the corona and the frieze 2. (Architecture) any moulding below a projection Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014