Top Definition
A beautiful girl, who is as tough as nails. She is nice but can get mean if you try to hurt her family, friends or animals.

Her name means and Irish Party or Dance. Her emotions run high. So don't make her mad!
She is gettting ready to fight, she is getting her Caillie on.
by Loving Momma February 03, 2010
A big, loud, fat, obnoxious, bitchy, slut.
She had sex with three guys in one night, then went to a buffet afterwards. That bitch is a Caillie!
by The Burly Man April 14, 2005
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