The phrase "umbilical cord" refers to a cord-like structure that connects a baby to its mother while in the womb. It helps in providing oxygen and nutrients to the baby, and also carries away waste material. Full definition
I waited til my newborn's umbilical chord fell off at a week before starting to use them. (diaperjunction.com)
Isn't it too soon to the cut the umbilical chord? (dunstanbaby.com)
Other causes can include placental abruption, infection, pre-eclampsia, problems with the umbilical chord, obstetric cholestasis, or genetic abnormalities. (thelegacyofleo.com)