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1. Oxford Dictionary

   umbilical cord

   • IPA[ʌmˌbɪlɪk(ə)l ˈkɔːd]

   英式

   • n.
     a flexible cordlike structure containing blood vessels and attaching a human or other mammalian fetus to the placenta during gestation.；a flexible cable, pipe, or other line carrying essential services or supplies.

   • noun: umbilical cord, plural noun: umbilical cords