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1.
A mathematically impossible amount to give (unless you borrow 10% from somewhere).
Coach: "I want you to give 110% out there!"
by Aaron of Minneapolis August 14, 2007
 
2.
an exertion beyond what is normally possible
In order to show I was serious about making things right, I gave 110% to earn recognition for my understanding of language.
by The Return of Light Joker May 25, 2011