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When the bone above your eyebrow sticks out in such a way that you resemble Frankenstein.
"Did you see that kid Billy? Not only did he have a uni but he had a frankenbrow too!"
by Angie Gunz January 05, 2012
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A physical characteristic in where the brow of a person is so large and strong it almost appears Frankensteinish
John C. Reilly is such a great actor, but his Frankenbrow is just downright scary!!
by Maggie55 January 12, 2012
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