Top definition
A fictional Bounty Hunter in the Star Wars universe. Tisko was one of the most dangerous Bounty Hunters in the galaxy.

Also, the act of being excessively dangerous, or violent in an almost ridiculous amount.
Look, there's tisko. Let's run

That guy was so Tisko when he shot that other guy in the eyeball
by Chunky Monkey June 25, 2005
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