umbilicus Definition in Cambridge British English Dictionary
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Definition of "umbilicus" - British English Dictionary

umbilicusnoun [C]

uk   us   /ʌmˈbɪl.ɪ.kəs/ specialized
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: Unlike other mammals, the human umbilicus is clearly visible.
Synonym
(Definition of umbilicus from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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