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1.
To be on the losing end of a fight.
No wonder he got chinned, he was acting like a right tit
by gobshite March 02, 2005
 
2.
To have a extrodinarily large chin.
Jeannie Chin is chinned.
by Fedora July 07, 2006
 
3.
To be fucked due to drink/drugs/exhaustion/sheer laziness.
Craig ( the day after a heavy night): CHINNED

Stuart ( After football training): CHINNED

Gary : Too chinned to move
by Foagle July 15, 2011