umbilicus
- IPA[ˌəmˈbiləkəs]
美式
- 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.
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