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  1. cloaca

    • IPA[klōˈākə]

    美式

    • n.
      a common cavity at the end of the digestive tract for the release of both excretory and genital products in vertebrates (except most mammals) and certain invertebrates. Specifically, the cloaca is present in birds, reptiles, amphibians, most fish, and monotremes.;a sewer.
    • noun: cloaca, plural noun: cloacae

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    • IPA[kləʊˈeɪkə]

    英式

    • n.
      a common cavity at the end of the digestive tract for the release of both excretory and genital ...

    Oxford Dictionary