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1.
frillion or f'rillion (fril yen), adj. - 1. A f***ing trillion. 2. A really big number. 3. A quantity so extraordinary as to be considered obscene.

Also - a number with "a lot of zeros".
I can think of a frillion examples.
by kid d November 26, 2007
 
2.
General; a very large number.
There's a frillion people in China
by Andre January 07, 2004
 
3.
An arbitrarily large number of something, each individual part of which is of little consequence. From "frill" (something not necessary) + "illions" (suffix on many large numbers)
I recommend you double check that ad copy, because FRILLIONS of people are going to read it.
by radical April 05, 2005