Top Definition
Derogatory term used on the northside of Dublin in the 1980s currently making an unlikely comback.

A close relation of shithead/shitehawk and at its most effective when used in conjuction with 'your ma' style insults.
Deco ye little gickna, I'm gonna burst you if you don't give me that joint.
by Gheorghe Hagi July 18, 2005
Wonky or Broken Pigeon.
Mostly seen at train stations and public squares across the globe with missing or deformed feet & claws.
Fahdy! you sold me a bad gickna.
by Fadhy Cash November 20, 2008
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