Top Definition
Leosis is a term used in competitions to mean when one person is up against someone else and knocks them the fuck out with one hit. It can be used as a synonym for Falcon Punch.
Related terms: Leosis-ing, Leosis'd, Falcon Leosis.
"Yo you see what she did there? She LEOSIS'd the competition!"

Guy 1: "Are you pumped for your fight tonight?"
Guy 2: "Yeah man, I'm gonna Falcon Leosis that shit."
by Border Runner December 19, 2010

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