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A reference to a large, giant eye in the middle of ones forehead.

Usually is a cyclops

Gianeyes are most commonly found on the foreheads of monsters, but a recent trend in New Zealand proves that some parents prefer their children to have a gianeye. People with a gianeye are now mating with others who have one in hope to pass on the gianeye gene.
You can't tell when a gianeye is winking or blinking!
by LuckyLemon February 15, 2009
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