Someone who is a billionaire (net worth over a billion dollars), but whose monetary collection consists entirely of pennies (or other coins).
Scrooge McDuck is a pillionaire.
by Cool ET December 15, 2005
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One who has the ability to surpass a billionaire a trillion and zillionaire...Pillionaire keeps piling it up but one will never see it cause its secured in the mind of a 🅿 #DaTrueth
My daddy is a pillionaire we just piling it up baby girl you better choose a winner #DaTrueth
by DaTrueth July 28, 2018
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Noun:

1. One who accumulates a net worth exceeding one billion dollars through the manufacturing, marketing, and sales of pillows.

2. One who consults with heads of state to recommend strategic or tactical solutions for no-win scenarios.
Example: Donald Trump summoned his pillionaire to the White House to consider his request for martial law to be invoked.
by Kawfene1 January 19, 2021
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