post·ca·va /ˌpos(t)ˈkevə/
  post·ca·va /-ˈkevə/ 名詞
  下腔靜脈
  Post·ca·va n.; pl. Postcavæ .  Anat. The inferior vena cava. -- Post*ca*val a.
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  postcava
       n : receives blood from lower limbs and abdominal organs and
           empties into the posterior part of the right atrium of
           the heart; formed from the union of the two iliac veins
           [syn: inferior vena cava]