Cajun French noun. Literal translation = Testicle. Pronounced coo'yawn. Someone who is a coullion is "a nut," i.e, a crazy person.
by Pinchdatail August 23, 2007
by Creolicious September 18, 2004
That guy has some coulliones showing his face around here after what he did. Act like a man and grow a pair of coulliones already.
by Bamboogie January 4, 2014