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  1. umbilicus

    • IPA[ˌəmˈbiləkəs]

    美式

    • n.
      the navel.;a depression or hole at the center of the shell whorls of some gastropod mollusks and many ammonites.
    • noun: umbilicus, plural noun: umbilici

    • 釋義

    名詞

    • 1. the navel.
    • a depression or hole at the center of the shell whorls of some gastropod mollusks and many ammonites.
    • a hole at each end of the hollow shaft of a feather.
    • 更多解釋
    • IPA[ʌmˈbɪlɪkəs]

    英式

    • n.
      the navel.

    Oxford Dictionary