aa

Forgive me for jumping on without reading this whole thread, but I've only got a second. aa is indubitably listed as a bona fide word in my American Heritage dictionary, 1992. I haven't checked the 2001 edition, but I'll bet it's there, too.

If I've missed Bill's point, then I'll just delete this when I have more time to read what's gone on...

DubDub