papilio (p??p?l???) n, pl -lios1. (Animals) a butterfly or moth2. (Animals) any species of swallow-tail butterfly in the genus PapilioCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014