A term for fans of the Canadian actor Nathan Fillion who currently stars in the ABC hit TV show Castle as the mystery novelist Richard Castle. Another term would be Fillionaire. Fillion is also known for playing Captain Malcolm "Mal" Reynolds in the sci-fi TV show Firefly and movie Serenity and Captain Hammer in the online web-series Dr. Horrible's Sing-Along Blog. Every Fillionite knows how double rainbow Nathan is and will always support him.

Nathan Fillion is my idol therefore I am a Fillionite

Fillionite by CastleBecks October 30, 2012

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Filliogasm

The violent and often-times inadvertent sexual pleasure that one experiences after watching a large sum of Nathan Fillion on any given medium (film, television, etc.).

Dude, I just watched some re-runs of Castle and Firefly and I had such a Filliogasm.

Filliogasm by nicovela September 16, 2010

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Nathan Fillion

sex on a stick

I love that hot guy from Firefly and Castle!
It's Nathan Fillion.

Nathan Fillion by PJ630 November 28, 2010

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Fillion

A unit of counting that equals one hundred trillion million billion gillion.

John had worked hard his whole life and had a fillion pounds in the bank.

Fillion by green923jade December 3, 2016

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