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1 definition by -Hannah-

 
1.
an indention on the pelvic bone on both sides of the lower stomach : gotten by swimming, lots of pushups/crunches, or just being pretty skinny. if you've got a creasnis, you are freaking lucky.
Person 1: Did you see Scott's creasnis?
Person 2: Its so hardcore! I want him.
by -Hannah- October 15, 2005