umbilicus
n. உந்தி, கொப்பூழ்க்குழி, திருகுசிப்பி மையப்பள்ளம், (தாவ., வில.) கொப்பூழ்வடிவக் குழிவு, (வடி.) வளைகோடுகள் இணைமையம்.
Um`bi*li"cus, n. Etym: [L. See Umbilic.] 1. (Anat.) Defn: 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. (Gr. & Rom. Antiq.) Defn: An ornamented or painted ball or boss fastened at each end of the stick on which manuscripts were rolled. Dr. W. Smith. 3. (Bot.) Defn: The hilum. 4. (Zoöl.) (a) A depression or opening in the center of the base of many spiral shells. (b) Either one of the two apertures in the calamus of a feather. 5. (Geom.) (a) One of foci of an ellipse, or other curve. [Obs.] (b) 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.