grass moth
n (Animals) any of a large subfamily of small night-flying pyralid moths, esp Crambus pratellus, that during the day cling to grass stems
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014