noun. Sounds like a big whatever-load.
Real citation: "Each block of three is written as 'blah hundred an blah-dy blah blah-illion'. For example, the '723' is read as 'seven hundred and twenty three thousand' (yes, an exception to the '-illion' rule) and the '56' is read as 'fifty six million')."
(March 8, 2008, xkcd, http://forums.xkcd.com/viewtopic.php?f=17&t=22054&p=658698)
Made-up citation: "I have blah-illion reasons why I love you. I just can't seem to think of any."