Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
umbilicus is a noun meaning "a scar where the umbilical cord was attached". It carries one recorded sense.
a scar where the umbilical cord was attached
“you were not supposed to show your navel on television”
“they argued whether or not Adam had a navel”
“she had a tattoo just above her bellybutton”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for umbilicus come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.