Top Definition
Northern Irish (Ulster Scots) equivalent of 'that'.
Thon girl has a face like a busted sofa.

Thon boy thonder, he's a pure eejit.
#norn iron #ulster #hallion #eejit #belfast
by nornironlad89 July 19, 2010
A third person singular gender neutral pronoun. The possessive of "thon" is "thon's" and the reflexive is "thonself".
That person is a millionaire thonself.
#thons #thonself #pronoun #they #them
by Fomt July 27, 2006
Another word biceps/triceps. Derived from the word pythons. This word is often used by meatheads and frequent gym users.
Hey what you training today brah? Going to train thons
#biceps #guns #arms #lifting #training
by marcus ruhl June 26, 2010
hardcore runner slang for marathon.
i'm running the thon
how was your thon?
i am thonning
i thonned
i am a thonner
i'm too sore to thon, i'll do a half-thon instead.
let's do an ultra-thon
#marathon #half-marathon #ultra-marathon #running #xc
by claytonoff June 12, 2010
Word used to attract attention of people with very blonde hair, normally quite short and happen to have a birthmark on their face. It comes from the latin name Amython. Also common are Thonatron, Thonalie and Blon. Especially appropriate in France, meaning tuna.
THONN!!

yes.
#thonatron #blon #thonalie #blonatron #thon
by Edgar George July 27, 2009
A act of being with a collection of people who smell each others faces and constantly hang out. Sometimes for weeks at a time.
I'm gonna thon it up in New York!!!
#thon-a-thon #phone-a-thon #rush-a-thon #bourgeoisie-a-thon #lack-a-thon
by remember me please December 01, 2009
A third person singular gender neutral pronoun. The possessive of "thon" is "thon's" and the reflexive is "thonself".
That person is a millionaire thonself.
#thons #thonself #pronoun #they #them
by Fomt July 27, 2006
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