The Collaborative International Dictionary
Navel-string
Navel-string \Na"vel-string`\, n. The umbilical cord.
Wiktionary
navel-string
n. umbilical cord
Usage examples of "navel-string".
Similarly in Uganda the jawbone is the only part of the body of a deceased king which, along with his navel-string, is carefully preserved in his temple-tomb and consulted oracularly.