A person who excels in almost everything. Commonly reffered to as 'boy wonder'.

A lio usually grows out to be a gifted artist, writer, politician or a business executive.
Wow, that guy's a real LIO.
by Sandrijn Petitiaux September 04, 2004
Let It Out
Man she made me mad..
LIO Man Lio
by Recovery... February 09, 2014
lesser included offense
Not just instinctive. In legal usage, an offense that would be proven by evidence of most of, but not all of, the same legally necessary elements of some other (more serious) offense.
assault is an lio of assault with a deadly weapon
by pros June 23, 2007
someone who hacks at tfc and is a newbie at irc
by Anonymous July 28, 2003

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