Umbilicus

[Sarah]

The depression, or mark, in the median line of the abdomen,which indicates the point where the umbilical cord separated from thefetus; the navel.

[Sarah]

Where the [umbilical cord] was cut, and the stump dries up and falls off, leaving an [indentation] in the middle of your [abdomen]...A [belly button] or [navel]. Something that kept you alive, but most commonly it gets cut and separates you from your Mother and you at birth...if it doesn't get cut then you don't learn to be accountable; and men especially, could suffer [separation] anxiety from their mothers and have a hard time with all future relationships. It gets tied off and heals up well and is often labeled either an [innie or an outie]. Pretty cute when girls [pierce] them, boys sometimes get [lint] in theirs. A place to store your [bubble-gum] for later. It's a nice way to fall [asleep], with your finger in your bellybutton. It can be pronounced [UM BILLY KISS]or [UM BIL LIKE US]....

[Becky]

the small, round part in the middle of the belly that is left after the umbilical cord (= the long tube of flesh joining the baby to its mother) has been cut at birth: