Top Definition
A totally radical Irish girl who's hotter than hell itself. Though totally devilish, she has a good heart, crazy humor, and doesn't give a rats ass what anyone thinks of her. Tell her you don't like her and she'll reply with a colorfully artistic response of where you can shove it. Beautifully fair (as most Irish women are) with eyes that hold the mysteries of the universe. To get a hold of the rare Kierney is to embark on the wildest journey of your life.
"Dude, do you see that chick over there?"
"The hot one that looks like she wants to eat you alive?"
"Yeah, man. She looks like a total Kierney. I'll let that Irish siren drag me to hell any day."
by musicman85 March 08, 2013

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