A woman of ill repute. A promiscuous female. A dirty, venerial whore who men should not touch with the longest of bargepoles.
"That Mavis is a right whore. Barry caught glowing herpes off her, the fecking dirtbird."
by Murf Murphy. April 9, 2006
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Irish slang used by scumbags for someone they consider morally lower than a scumbag, typically a paedophile or murderer.
"that Christy from number 98 deserves jail after what he did to jacinta, f&*kin dirtbird"
by womoma April 15, 2005
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Someone who doesn't wash that often. (Northern Irish slang)
He's such a dirtbird, you can always smell him before you see him.
by Boc2 November 10, 2007
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small, possibly stupid birds that sleep in the dirt during the darkest of hours. When approached on bike, the elusive dirtbird will frantically fly in the face of the on-comer. A defense mechanism? Or perhaps another cruel joke by Mother Nature...
I was railing around the corner on the fire-road when this fucking dirtbird flew in my face.
by The Dirtbird Hunter November 7, 2006
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