1. (noun)navel, umbilicus, bellybutton, belly button, omphalos, omphalus a scar where the umbilicalcord 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"
2. (noun)navel, navel point the centerpoint or middle of something
"the Incas believed that Cuzco was the navel of the universe"