单词 | umbilicus |
释义 | um·bil·i·cus ![]() n. pl. um·bil·i·ci (-sī′) 1. See navel. 2. Biology A small opening or depression similar to a navel, as the hollow at the base of the shell of some gastropod mollusks, one of the openings in the shaft of a feather, or the hilum of a seed. [Latin umbilīcus; see nobh- in the Appendix of Indo-European roots.] |
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