Top Definition
A set of abdominal muscles, well-developed but hidden by a layer of fat 3/8 to 1/2 inch thick, just enough to hide the six-pack. May progress into Dunlap Disease, depending on eating habits and level of physical activity of the owner.
Hey Joe, if you're gonna compete in that bodybuilding contest, ya gotta lose the pillow top six-pack!
by Socrates52 July 30, 2011

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