From the forming member of the MHBA Jeff Donahue, here
is a much better explanation of Nonic.
Greetings from Brewery Creek
My understanding is that the bulge on the "nonic" glass is to prevent the
glasses from clinking together on the shelf, or wherever they are stored, or hastily
grabbed by a bar wench from a pub table, etc, thus preventing "nicks" in the
drinking edge. "No nick" became nonic. (some guy naked "Nick"
probably threatened a law suit)
Jeff