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n. a person, usually Irish, who cannot be categorised, with a certain level of eccentricity and mishcheiviousness. Often identifiable by a willingness to try anything 'for the craic'. One can only know if one is a halian by searching inside oneself to find the 'inner halian', which is said to be different for each person.
"you are such a mad halian"
"Up the Halians!"
by G-Sown January 19, 2006
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