1.
[syn: navel, umbilicus, bellybutton, belly button, omphalos, omphalus]
The Collaborative International Dictionary of English v.0.48:
Omphalos \Om"pha*los\, n. [L., fr. Gr. ?.] (Anat.)
The navel.
[1913 Webster]
WordNet (r) 3.0 (2006):
omphalos
n 1: 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" [syn: navel, umbilicus,
bellybutton, belly button, omphalos, omphalus]