bedder (?b?d?) n1. (Education) Brit (at some universities) someone employed by a college to clean students’ rooms2. (Horticulture) a plant that may be grown in a garden bedCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014