Top Definition
Cajun French noun. Literal translation = Testicle. Pronounced coo'yawn. Someone who is a coullion is "a nut," i.e, a crazy person.
Pooyie! Dat Boudreaux is a coullion.
by Pinchdatail August 23, 2007

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Cajun noun. Asshole. Bitch.
Defines anyone who is an asshole or very stupid person.
Boudreaux! Ya actin like coullion.
by Creolicious September 18, 2004

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