Umbilic
Umbilic , noun
[From Latin umbilicus: compare French ombilic. See Navel.]
1.
The navel; the center. [Obsolete]
The umbilic of the world.
2.
(Geometry) An umbilicus. See Umbilicus, 5 (b).
Umbilic , adjective
(Anatomy) See Umbilical, 1.