umbilīcus ī, m * umbalus (o)mfolo/s), the navel: ut umbilico tenus aqua esset, L.

—The middle, centre: qui locus umbilicus Siciliae nominatur: terrarum, i. e. Delphi: orbis terrarum, L.: umbilicum Graeciae incolere, L.

—The end of a rod on which a manuscript was rolled: iambos Ad umbilicum adducere, i. e. to bring to an end, H.

— A sea-snail, sea-cockle.