zillion

名词 zillion:

1. a very large indefinite number (usually hyperbole)
   同义词：million, billion, trillion, jillion

形容词 zillion:

1. very large indeterminate number

zil.lion

n.Informal （名词）【非正式用语】
An extremely large, indefinite number.
无数：无限大、没限定的数目

来源：
On the model of million, billion , etc
仿照 million, billion等