Top definition
An amazing, funny, trusty, adorable person, with kick-ass hair! You will KNOW when you meet a Tiernney.
Person: "Dude! Did you see that kid?!"
Other Person: "Yeah! He was such a Tiernney!!"
Person: "Ikr?! Did you see his hair?! Totally kick-ass!"
by mss. sharky December 09, 2010
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