Top definition
The combination of slack and chill.
May be used as a adjective or a verb.
Hey man whats up? Not much just slillin' at home drinking some beer and watching the game.

George never gets into any fights or overreacts, he is one slill dude!
by Slill dude October 01, 2009
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2
Matt got slilled by Jenny.
by Elena April 03, 2005
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