means cool , rad , wicked awesome , gnarly . anything like that ...

" dude , you totally landed that . that was fucking osky . "

or

" that guitar solo was osky . "
by alecksmarmar September 04, 2008
OutSide KittY, a worker cat who lives outside defending the area from invading mice and other small creatures.
Osky perches on the tree stump out back near the stonewall where the chipmunks and mice traverse. He's so thin because mice are not fattening.
by mominska August 03, 2010

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