flatlong

flatlong

(ˈflætˌlɒŋ)
adv
1. prostrate, flat side down
2. with or along the flat side; with the flat sides together
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014