pes·sa·ry /ˈpɛsəri/
  子宮托,子宮套
  pes·sa·ry /ˈpɛsərɪ/ 名詞
  子宮托,陰道環,陰道栓(劑)
  Pes·sa·ry n.; pl. Pessaries   Med. (a) An instrument or device to be introduced into and worn in the vagina, to support the uterus, or remedy a malposition. (b) A medicinal substance in the form of a bolus or mass, designed for introduction into the vagina; a vaginal suppository.
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  pessary
       n : a contraceptive device consisting of a flexible dome-shaped
           cup made of rubber or plastic; it is filled with
           spermicide and fitted over the uterine cervix [syn: diaphragm,
            contraceptive diaphragm]