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grillion

British  
/ ˈɡrɪljən /

noun

  1. (often plural) an extremely large but unspecified number, quantity, or amount

    he had grillions more goes than me

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

determiner

  1. amounting to a grillion

    a grillion years old

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of grillion

C20: on the model of million