meaning of umbilicus
1. The depression, or mark, in the median line of the abdomen, which indicates the point where the umbilical cord separated from the fetus; the navel.
2. An ornamented or painted ball or boss fastened at each end of the stick on which manuscripts were rolled.
3. The hilum.
4. A depression or opening in the center of the base of many spiral shells.
5. Either one of the two apertures in the calamus of a feather.
6. One of foci of an ellipse, or other curve.
7. A point of a surface at which the curvatures of the normal sections are all equal to each other. A sphere may be osculatory to the surface in every direction at an umbilicus. Called also umbilic.
8. scar where the umbilical cord was attached
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