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1 definition by heydude55555

The act of being a total and complete pussy. Think of being in a back alley and you run into a kitten. You run away screaming in terror as she meows at you. That's being a Gill.
Wow, that guy is crying because he scraped his knee. Somebody tell him to stop being such a Gill.
by heydude55555 July 21, 2011