Umbilicus
The Cyclopedic Law Dictionary · Walter A. Shumaker and George Foster Longsdorf; ed. James C. Cahill · 1922
The Cyclopedic Law Dictionary
(Lat.) Literally, the navel; the center of any thing. The name given to the fourth and middle part of the Digests, consisting of eight books, from the twentieth to the twenty-seventh, both inclusive.